MAX4356ECD中文资料

General DescriptionThe MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected,RS-485/RS-422 transceivers feature one driver and one receiver. These devices include fail-safe circuitry, guar-anteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3070E–MAX3079E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflec-tions caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX3073E/MAX3074E/MAX3075E also feature slew-rate-limited drivers but allow transmit speeds up to 500kbps. The MAX3076E/MAX3077E/MAX3078E driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX3079E slew rate is pin selectable for 250kbps, 500kbps, and 16Mbps.The MAX3072E/MAX3075E/MAX3078E are intended for half-duplex communications, and the MAX3070E/MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX3077E are intended for full-duplex communications. The MAX3079E is selectable for half-duplex or full-duplex operation. It also features independently programmable receiver and transmitter output phase through separate pins.The MAX3070E–MAX3079E transceivers draw 800µA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256transceivers on the bus.ApplicationsLighting Systems Industrial Control Telecom Security Systems InstrumentationFeatureso 3.3V Operationo Electrostatic Discharge (ESD) Protection for RS-485 I/O Pins±15kV Human Body Model o True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility o Hot-Swap Input Structure on DE and RE o Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission(MAX3070E–MAX3075E/MAX3079E)o Low-Current Shutdown Mode (Except MAX3071E/MAX3074E/MAX3077E)o Pin-Selectable Full-/Half-Duplex Operation (MAX3079E)o Phase Controls to Correct for Twisted-Pair Reversal (MAX3079E)o Allow Up to 256 Transceivers on the Bus o Available in Industry-Standard 8-Pin SO PackageMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers________________________________________________________________Maxim Integrated Products 1Ordering Information19-2668; Rev 1; 1/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Selector Guide, Pin Configurations, and Typical Operating Circuits appear at end of data sheet.Ordering Information continued at end of data sheet.M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.(All voltages referenced to GND)Supply Voltage (V CC ).............................................................+6V Control Input Voltage (RE , DE, SLR,H/F , TXP, RXP)......................................................-0.3V to +6V Driver Input Voltage (DI)...........................................-0.3V to +6V Driver Output Voltage (Z, Y, A, B).............................-8V to +13V Receiver Input Voltage (A, B)....................................-8V to +13V Receiver Input VoltageFull Duplex (A, B)..................................................-8V to +13V Receiver Output Voltage (RO)....................-0.3V to (V CC + 0.3V)Driver Output Current.....................................................±250mAContinuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C).....727mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 14-Pin Plastic DIP (derate 10.0mW/°C above +70°C)...800mW Operating Temperature RangesMAX307_EE_ _................................................-40°C to +85°C MAX307_EA_ _..............................................-40°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________3DC ELECTRICAL CHARACTERISTICS (continued)Note 1:All currents into the device are positive. All currents out of the device are negative. All voltages are referred to deviceground, unless otherwise noted.Note 2:∆V OD and ∆V OC are the changes in V OD and V OC , respectively, when the DI input changes state.Note 3:The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback out-put current applies during current limiting to allow a recovery from bus contention.M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 4_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX3070E/MAX3071E/MAX3072E/MAX3079E with SRL = UNCONNECTED (250kbps)RECEIVER SWITCHING CHARACTERISTICSMAX3070E/MAX3071E/MAX3072E/MAX3079E with SRL = UNCONNECTED (250kbps)(V CC = 3.3V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = 3.3V and T A = +25°C.)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________5DRIVER SWITCHING CHARACTERISTICSMAX3073E/MAX3074E/MAX3075E/MAX3079E with SRL = V CC (500kbps)RECEIVER SWITCHING CHARACTERISTICSMAX3073E/MAX3074E/MAX3075E/MAX3079E with SRL = V CC (500kbps)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 6_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX3076E/MAX3077E/MAX3078E/MAX3079E with SRL = GND (16Mbps)RECEIVER SWITCHING CHARACTERISTICSMAX3076E/MAX3077E/MAX3078E/MAX3079E with SRL = GND (16Mbps)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________7SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )100755025-250.60.70.80.91.00.5-50125OUTPUT CURRENTvs. RECEIVER OUTPUT HIGH VOLTAGEM A X 3070E t o c 02OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )3.02.52.01.51.00.55101520253000 3.5OUTPUT CURRENTvs. RECEIVER OUTPUT LOW VOLTAGEM A X 3070E t o c 03OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )3.02.52.01.51.00.551015202530350 3.5RECEIVER OUTPUT HIGH VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T H I G H V O L T A G E (V )100755025-253.053.103.153.203.253.303.00-50125RECEIVER OUTPUT LOW VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T L O W V O L T A G E (V )10075-25025500.10.20.30.40.50.60.70.8-50125DRIVER OUTPUT CURRENTvs. DIFFERENTIAL OUTPUT VOLTAGEM A X 3070E t o c 06DIFFERENTIAL OUTPUT VOLTAGE (V)O U T P U T C U R R E N T (m A )3.02.51.5 2.01.00.51020304050607080901000 3.5DRIVER DIFFERENTIAL OUTPUT VOLTAGEvs. TEMPERATURETEMPERATURE (°C)D I F FE R E N T I A L O U T P U T V O L T A G E (V )100752550-251.701.801.902.002.102.202.302.402.502.601.60-50125OUTPUT CURRENTvs. TRANSMITTER OUTPUT HIGH VOLTAGEOUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )32-6-5-4-2-10-31204060801001201401600-74OUTPUT CURRENTvs. TRANSMITTER OUTPUT LOW VOLTAGEOUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )10864220406080100120140160180012Typical Operating Characteristics(V CC = 3.3V, T A = +25°C, unless otherwise noted.)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 8_______________________________________________________________________________________SHUTDOWN CURRENT vs. TEMPERATURETEMPERATURE (°C)S H U T D O W N C U R R E N T (µA )100752550-250.20.40.60.81.01.21.41.61.82.00-50125DRIVER PROPAGATION DELAY vs. TEMPERATURE (250kbps)TEMPERATURE (°C)D R I VE R P R O P A G A T I O N D E L A Y (n s )100755025-256007008009001000500-50125DRIVER PROPAGATION DELAY vs. TEMPERATURE (500kbps)TEMPERATURE (°C)D R I V ER P R O P A G A T I O N D E L A Y (n s )100755025-25250300350400450500200-50125DRIVER PROPAGATION DELAY vs. TEMPERATURE (16Mbps)TEMPERATURE (°C)D R I VE R P R O P A G A T I O N D E L A Y (n s )100755025-25510152025300-50125RECEIVER PROPAGATION DELAYvs. TEMPERATURE (250kbps AND 500kbps)TEMPERATURE (°C)D R IV E R P R O P A G A T I O N D E L A Y (n s )100755025-253060901201500-50125RECEIVER PROPAGATION DELAY vs. TEMPERATURE (16Mbps)TEMPERATURE (°C)R E C E I V E R P R O P A G A T I O N D E L A Y (n s )1007550250-25102030405060700-50125DRIVER PROPAGATION DELAY (250kbps)MAX3070E toc161µs/div V Y - V Z 2V/div DI 2V/divRECEIVER PROPAGATION DELAY(250kbps AND 500kbps)MAX3070E toc17200ns/divV A - V B 1V/divRO 2V/divTypical Operating Characteristics (continued)(V CC = 3.3V, T A = +25°C, unless otherwise noted.)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________9Test Circuits and WaveformsDRIVER PROPAGATION DELAY (500kbps)MAX3070E toc18400ns/div V Y - V Z 2V/divDI 2V/divDRIVER PROPAGATION DELAY (16Mbps)MAX3070E toc1910ns/div V Z 1V/divV Y 1V/divDI 2V/divRECEIVER PROPAGATION DELAY (16Mbps)MAX3070E toc2020ns/divV A 1V/divV B 1V/divRO 2V/divTypical Operating Characteristics (continued)(V CC = 3.3V, T A = +25°C, unless otherwise noted.)Figure 2. Driver Timing Test CircuitFigure 3. Driver Propagation DelaysM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 10______________________________________________________________________________________Test Circuits and Waveforms (continued)DHZ DZH DZH(SHDN)Figure 5. Driver Enable and Disable Times (t DZL , t DLZ , t DLZ(SHDN))MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversTest Circuits and Waveforms (continued)Figure 6. Receiver Propagation Delay Test CircuitFigure 8. Receiver Enable and Disable TimesM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX3070E/MAX3073E/MAX3076EPin Description (continued)MAX3071E/MAX3074E/MAX30767EFunction TablesM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers MAX3072E/MAX3075E/MAX3078EFunction Tables (continued)MAX3079EDetailed Description The MAX3070E–MAX3079E high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all dri-vers disabled (see the Fail-Safe section). The MAX3070E/MAX3072E/MAX3073E/MAX3075E/ MAX3076E/MAX3078E/MAX3079E also feature a hot-swap capability allowing line insertion without erro-neous data transfer (see the Hot Swap Capability section). The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX3073E/MAX3074E/MAX3075E also offer slew-rate limits allowing transmit speeds up to 500kbps. The MAX3076E/MAX3077E/MAX3078Es’ dri-ver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX3079E’s slew rate is selectable between 250kbps, 500kbps, and 16Mbps by driving a selector pin with a three-state driver.The MAX3072E/MAX3075E/MAX3078E are half-duplex transceivers, while the MAX3070E/MAX3071E/ MAX3073E/MAX3074E/MAX3076E/MAX3077E are full-duplex transceivers. The MAX3079E is selectable between half- and full-duplex communication by driving a selector pin (SRL) high or low, respectively.All devices operate from a single 3.3V supply. Drivers are output short-circuit current limited. Thermal-shutdown cir-cuitry protects drivers against excessive power dissipa-tion. When activated, the thermal-shutdown circuitry places the driver outputs into a high-impedance state.Receiver Input Filtering The receivers of the MAX3070E–MAX3075E, and the MAX3079E when operating in 250kbps or 500kbps mode, incorporate input filtering in addition to input hysteresis. This filtering enhances noise immunity with differential signals that have very slow rise and fall times. Receiver propagation delay increases by 25% due to this filtering.Fail-Safe The MAX3070E family guarantees a logic-high receiver output when the receiver inputs are shorted or open, or when they are connected to a terminated transmission line with all drivers disabled. This is done by setting the receiver input threshold between -50mV and -200mV. If the differential receiver input voltage (A - B) is greater than or equal to -50mV, RO is logic high. If A - B is less than or equal to -200mV, RO is logic low. In the case ofa terminated bus with all transmitters disabled, the receiver’s differential input voltage is pulled to 0V bythe termination. With the receiver thresholds of theMAX3070E family, this results in a logic high with a50mV minimum noise margin. Unlike previous fail-safe devices, the -50mV to -200mV threshold complies withthe ±200mV EIA/TIA-485 standard.Hot-Swap Capability (Except MAX3071E/MAX3074E/MAX3077E)Hot-Swap InputsWhen circuit boards are inserted into a hot, or pow-ered, backplane, differential disturbances to the databus can lead to data errors. Upon initial circuit board insertion, the data communication processor under-goes its own power-up sequence. During this period,the processor’s logic-output drivers are high imped-ance and are unable to drive the DE and RE inputs ofthese devices to a defined logic level. Leakage cur-rents up to ±10µA from the high-impedance state of the processor’s logic drivers could cause standard CMOS enable inputs of a transceiver to drift to an incorrectlogic level. Additionally, parasitic circuit board capaci-tance could cause coupling of V CC or GND to the enable inputs. Without the hot-swap capability, these factors could improperly enable the transceiver’s driveror receiver.When V CC rises, an internal pulldown circuit holds DElow and RE high. After the initial power-up sequence,the pulldown circuit becomes transparent, resetting thehot-swap tolerable input.Hot-Swap Input CircuitryThe enable inputs feature hot-swap capability. At theinput there are two NMOS devices, M1 and M2 (Figure 9). When V CC ramps from zero, an internal 10µstimer turns on M2 and sets the SR latch, which alsoturns on M1. Transistors M2, a 500µA current sink, andM1, a 100µA current sink, pull DE to GND through a5kΩresistor. M2 is designed to pull DE to the disabledstate against an external parasitic capacitance up to100pF that can drive DE high. After 10µs, the timer deactivates M2 while M1 remains on, holding DE low against three-state leakages that can drive DE high. M1 remains on until an external source overcomes the required input current. At this time, the SR latch resetsand M1 turns off. When M1 turns off, DE reverts to a standard, high-impedance CMOS input. Whenever V CCdrops below 1V, the hot-swap input is reset.For RE there is a complementary circuit employing two PMOS devices pulling RE to V CC.MAX3070E–MAX3079E+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 3070E –M A X 3079EMAX3079E ProgrammingThe MAX3079E has several programmable operating modes. Transmitter rise and fall times are programma-ble, resulting in maximum data rates of 250kbps,500kbps, and 16Mbps. To select the desired data rate,drive SRL to one of three possible states by using a three-state driver: V CC , GND, or unconnected. F or 250kbps operation, set the three-state device in high-impedance mode or leave SRL unconnected. F or 500kbps operation, drive SRL high or connect it to V CC .F or 16Mbps operation, drive SRL low or connect it to GND. SRL can be changed during operation without interrupting data communications.Occasionally, twisted-pair lines are connected backward from normal orientation. The MAX3079E has two pins that invert the phase of the driver and the receiver to correct this problem. F or normal operation, drive TXP and RXP low, connect them to ground, or leave them unconnect-ed (internal pulldown). To invert the driver phase, drive TXP high or connect it to V CC . To invert the receiver phase, drive RXP high or connect it to V CC . Note that the receiver threshold is positive when RXP is high.The MAX3079E can operate in full- or half-duplex mode. Drive the H/F pin low, leave it unconnected (internal pulldown), or connect it to GND for full-duplexoperation. Drive H/F high for half-duplex operation. In full-duplex mode, the pin configuration of the driver and receiver is the same as that of a MAX3070E. In half-duplex mode, the receiver inputs are switched to the driver outputs, connecting outputs Y and Z to inputs A and B, respectively. In half-duplex mode, the internal full-duplex receiver input resistors are still connected to pins 11 and 12.±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro-static discharges encountered during handling and assembly. The driver outputs and receiver inputs of the MAX3070E family of devices have extra protection against static electricity. Maxim ’s engineers have devel-oped state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD struc-tures withstand high ESD in all states: normal operation,shutdown, and powered down. After an ESD event, the MAX3070E –MAX3079E keep working without latchup or damage.ESD protection can be tested in various ways. The transmitter outputs and receiver inputs of the MAX3070E –MAX3079E are characterized for protection to the following limits:•±15kV using the Human Body Model•±6kV using the Contact Discharge method specified in IEC 1000-4-2ESD Test ConditionsESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body ModelFigure 10a shows the Human Body Model, and Figure 10b shows the current waveform it generates when dis-charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest,which is then discharged into the test device through a 1.5k Ωresistor.IEC 1000-4-2The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment. However, it does not specifically refer to integrated circuits. The MAX3070E family of devices helps you design equip-ment to meet IEC 1000-4-2, without the need for addi-tional ESD-protection components.The major difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceiverscurrent in IEC 1000-4-2, because series resistance is lower in the IEC 1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 1000-4-2 is generally lower than that measured using the Human Body Model.F igure 10c shows the IEC 1000-4-2 model, and F igure 10d shows the current waveform for IEC 1000-4-2 ESD Contact Discharge test.The air-gap test involves approaching the device with a charged probe. The contact-discharge method connects the probe to the device before the probe is energized.Machine Model The machine model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. The objective is to emulate the stress caused when I/O pins are contacted by handling equipment during test and assembly. Of course, all pins require this protection, not just RS-485 inputs and outputs.Applications Information256 Transceivers on the BusThe standard RS-485 receiver input impedance is 12kΩ(1-unit load), and the standard driver can drive up to 32-unit loads. The MAX3070E family of transceivers has a1/8-unit load receiver input impedance (96kΩ), allowingup to 256 transceivers to be connected in parallel on one communication line. Any combination of these devicesas well as other RS-485 transceivers with a total of 32-unit loads or fewer can be connected to the line.Reduced EMI and ReflectionsThe MAX3070E/MAX3071E/MAX3072E feature reducedslew-rate drivers that minimize EMI and reduce reflec-tions caused by improperly terminated cables, allowingerror-free data transmission up to 250kbps. TheMAX3073E/MAX3074E/MAX3075E offer higher driver output slew-rate limits, allowing transmit speeds up to500kbps. The MAX3079E with SRL = V CC or uncon-nected, are slew-rate limited. With SRL unconnected,the MAX3079E error-free data transmission is up to250kbps; with SRL connected to V CC the data transmit speeds up to 500kbps.MAX3070E–MAX3079E+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 3070E –M A X 3079ELow-Power Shutdown Mode (Except MAX3071E/MAX3074E/MAX3077E)Low-power shutdown mode is initiated by bringing both RE high and DE low. In shutdown, the devices typically draw only 50nA of supply current.RE and DE can be driven simultaneously; the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown.Enable times t ZH and t ZL (see the Switching Characteristics section) assume the part was not in a low-power shutdown state. Enable times t ZH(SHDN)and t ZL(SHDN)assume the parts were shut down. It takes drivers and receivers longer to become enabled from low-power shutdown mode (t ZH(SHDN), t ZL(SHDN)) than from driver/receiver-disable mode (t ZH , t ZL ).Driver Output ProtectionTwo mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention.The first, a foldback current limit on the output stage,provides immediate protection against short circuits over the whole common-mode voltage range (see the Typical Operating Characteristics ). The second, a thermal-shut-down circuit, forces the driver outputs into a high-imped-ance state if the die temperature becomes excessive.Line LengthThe RS-485/RS-422 standard covers line lengths up to 4000ft. F or line lengths greater than 4000ft, use the repeater application shown in Figure 11.Typical ApplicationsThe MAX3072E/MAX3075E/MAX3078E/MAX3079E transceivers are designed for bidirectional data commu-nications on multipoint bus transmission lines. F igures 12 and 13 show typical network applications circuits. To minimize reflections, terminate the line at both ends in its characteristic impedance, and keep stub lengths off the main line as short as possible. The slew-rate-lim-ited MAX3072E/MAX3075E and the two modes of the MAX3079E are more tolerant of imperfect termination.Chip InformationTRANSISTOR COUNT: 1228PROCESS: BiCMOS+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversFigure 11. Line Repeater for MAX3070E/MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX3077E/MAX3079E in Full-Duplex Mode+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX3070E–MAX3079EM A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversPin Configurations and Typical Operating CircuitsMAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________21Pin Configurations and Typical Operating Circuits (continued)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 22______________________________________________________________________________________Ordering Information (continued)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________23Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 3070E –M A X 3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 24______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX3070E–MAX3079E+3.3V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. N o circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________25©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

General Description The MAX3483, MAX3485, MAX3486, MAX3488,MAX3490, and MAX3491 are 3.3V , low-power transceivers forRS-485 and RS-422 communication. Each part containsone driver and one receiver. The MAX3483 and MAX3488feature slew-rate-limited drivers that minimize EMI andreduce reflections caused by improperly terminatedcables, allowing error-free data transmission at data ratesup to 250kbps. The partially slew-rate-limited MAX3486transmits up to 2.5Mbps. The MAX3485, MAX3490, andMAX3491 transmit at up to 10Mbps.Drivers are short-circuit current-limited and are protectedagainst excessive power dissipation by thermal shutdowncircuitry that places the driver outputs into a high-imped-ance state. The receiver input has a fail-safe feature thatguarantees a logic-high output if both inputs are opencircuit.The MAX3488, MAX3490, and MAX3491 feature full-duplex communication, while the MAX3483, MAX3485, andMAX3486 are designed for half-duplex communication.Applications ●Low-Power RS-485/RS-422 Transceivers ●Telecommunications ●Transceivers for EMI-Sensitive Applications ●Industrial-Control Local Area NetworksFeatures●Operate from a Single 3.3V Supply—No Charge Pump!●Interoperable with +5V Logic ●8ns Max Skew (MAX3485/MAX3490/MAX3491)●Slew-Rate Limited for Errorless Data Transmission (MAX3483/MAX3488)●2nA Low-Current Shutdown Mode (MAX3483/MAX3485/MAX3486/MAX3491)●-7V to +12V Common-Mode Input Voltage Range ●Allows up to 32 Transceivers on the Bus ●Full-Duplex and Half-Duplex Versions Available ●Industry Standard 75176 Pinout (MAX3483/MAX3485/MAX3486)●Current-Limiting and Thermal Shutdown for Driver Overload Protection 19-0333; Rev 1; 5/19Ordering Information continued at end of data sheet.*Contact factory for for dice specifications.PARTTEMP . RANGE PIN-PACKAGE MAX3483CPA0°C to +70°C 8 Plastic DIP MAX3483CSA0°C to +70°C 8 SO MAX3483C/D0°C to +70°C Dice*MAX3483EPA-40°C to +85°C 8 Plastic DIP MAX3483ESA-40°C to +85°C 8 SO MAX3485CPA0°C to +70°C 8 Plastic DIP MAX3485CSA0°C to +70°C 8 SO MAX3485C/D0°C to +70°C Dice*MAX3485EPA-40°C to +85°C 8 Plastic DIP MAX3485ESA -40°C to +85°C 8 SO PARTNUMBERGUARANTEED DATA RATE (Mbps)SUPPLY VOLTAGE (V)HALF/FULL DUPLEX SLEW-RATE LIMITED DRIVER/RECEIVER ENABLE SHUTDOWN CURRENT (nA)PIN COUNT MAX34830.25 3.0 to 3.6Half Yes Yes 28MAX348510Half No No 28MAX34862.5Half Yes Yes 28MAX34880.25Half Yes Yes —8MAX349010Half No No —8MAX349110Half No Yes 214MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491Selection TableOrdering Information找电子元器件上宇航军工Figure 1. MAX3483/MAX3485/MAX3486 Pin Configuration and Typical Operating Circuit Figure 2. MAX3488/MAX3490 Pin Configuration and Typical Operating Circuit Figure 3. MAX3491 Pin Configuration and Typical Operating CircuitMAX3486/MAX3488/MAX3490/MAX3491True RS-485/RS-422 TransceiversFigure 22. MAX3488/MAX3490/MAX3491 Full-Duplex RS-485 NetworkFigure 23. Line Repeater for MAX3488/MAX3490/MAX3491MAX3486/MAX3488/MAX3490/MAX3491True RS-485/RS-422 Transceivers。

GAIN
SUFFIX
20
T
50
F
100
H
For example, MAX4376TAUK is a single high-side amplifier with a gain of 20.
High-side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the battery charger. The input common-mode range of 0 to +28V is independent of the supply voltage and ensures that the current-sense feedback remains viable even when connected to a battery pack in deep discharge.
-40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C
5 SOT23-5 5 SOT23-5 5 SOT23-5 8 SO 8 SO 8 SO
ADOG ADOH ADOI
Applications
Notebook Computers
Current-Limited Power Supplies
Fuel Gauges in PC
General-System/BoardLevel Current Monitoring

MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O Buffers________________________________________________________________Maxim Integrated Products1Ordering InformationTypical Operating CircuitFunctional Diagram19-2208; Rev 0; 10/01For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .SPI and QSPI are trademarks of Motorola, Inc.Pin Configuration appears at end of data sheet.General DescriptionThe MAX4355 is a 16 ✕16 highly integrated video crosspoint switch matrix with input and output buffers.This device operates from dual ±3V to ±5V supplies or from a single +5V supply. Digital logic is supplied from an independent single +2.7V to +5.5V supply. All inputs and outputs are buffered, with all outputs able to drive standard 75Ωreverse-terminated video loads.The switch matrix configuration and output buffer gain are programmed through an SPI ™/QSPI ™-compatible,3-wire serial interface and initialized with a single update signal. The unique serial interface operates in two modes facilitating both fast updates and initializa-tion. On power-up, all outputs are initialized in the dis-abled state to avoid output conflicts in large-array configurations.Superior flexibility, high integration, and space-saving packaging make this nonblocking switch matrix ideal for routing video signals in security and video-on-demand systems.The MAX4355 is available in a 100-pin TQFP package and specified over an extended -40°C to +85°C tem-perature range.ApplicationsSecurity SystemsVideo RoutingVideo-on-Demand SystemsFeatureso 16 ✕16 Nonblocking Matrix with Buffered Inputs and Outputs o Operates from ±3V, ±5V, or +5V Supplies o Individually Programmable Output Buffer Gain (A V = +1V/V or +2V/V)o High-Impedance Output Disable for Wired-OR Connections o 0.1dB Gain Flatness to 14MHzo -62dB Crosstalk, -110dB Isolation at 6MHz o 0.02%/0.12°Differential Gain/Differential Phase Error o Low 195mW Power Consumption (0.76mW per Point)M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES ±5VStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Analog Supply Voltage (V CC - V EE ).....................................+11V Digital Supply Voltage (V DD - DGND) ...................................+6V Analog Supplies to Analog Ground(V CC - AGND) and (AGND - V EE )......................................+6V Analog Ground to Digital Ground .........................-0.3V to +0.3V IN_ Voltage Range..........................(V CC + 0.3V) to (V EE - 0.3V)OUT_ Short-Circuit Duration to AGND, V CC , or V EE ......Indefinite SCLK, CE , UPDATE , MODE, A_, DIN, DOUT,RESET , AOUT .........................(V DD + 0.3V) to (DGND - 0.3V)Current into Any Analog Input Pin (IN_)...........................±50mA Current into Any Analog Output Pin (OUT_).....................±75mA Continuous Power Dissipation (T A = +70°C)100-Pin TQFP (derate 22.2mW/°C above +70°C).....1777mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s)................................+300°CMAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O Buffers_______________________________________________________________________________________3DC ELECTRICAL CHARACTERISTICS —DUAL SUPPLIES ±5V (continued)M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers 4_______________________________________________________________________________________DC ELECTRICAL CHARACTERISTICS —DUAL SUPPLIES ±3V(V CC = +3V, V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN _ = 0, R L = 150Ωto AGND, and T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O Buffers_______________________________________________________________________________________5DC ELECTRICAL CHARACTERISTICS —DUAL SUPPLIES ±3V (continued)(V CC = +3V, V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN _ = 0, R L = 150Ωto AGND, and T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)DC ELECTRICAL CHARACTERISTICS —SINGLE SUPPLY +5VM A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers 6_______________________________________________________________________________________DC ELECTRICAL CHARACTERISTICS —SINGLE SUPPLY +5V (continued)(V CC = +5V, V EE = 0, V DD = +5V, AGND = DGND = 0, V IN _ = +1.75V, A V = +1V/V, R L = 150Ωto AGND, and T A = T MIN to T MAX ,MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O Buffers_______________________________________________________________________________________7LOGIC-LEVEL CHARACTERISTICS(V CC - V EE)= +4.5V to +10.5V, V DD = +2.7V to +5.5V, AGND = DGND = 0, V IN _ = 0, R L = 150Ωto AGND, andAC ELECTRICAL CHARACTERISTICS —DUAL SUPPLIES ±5V(V CC = +5V, V EE = -5V, V DD = +5V, AGND = DGND = 0, V IN _ = 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O BuffersAC ELECTRICAL CHARACTERISTICS —DUAL SUPPLIES ±5V (continued)AC ELECTRICAL CHARACTERISTICS —DUAL SUPPLIES ±3V(V CC = +3V, V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN _= 0, R L = 150Ωto AGND, A V = +1V/V, and T A = +25°C, unless other-MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O Buffers_______________________________________________________________________________________9AC ELECTRICAL CHARACTERISTICS —DUAL SUPPLIES ±3V (continued)(V CC = +3V, V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN _ = 0, R L = 150Ωto AGND, A V = +1V/V, and T A = +25°C, unless other-wise noted.)M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers 10______________________________________________________________________________________AC ELECTRICAL CHARACTERISTICS —SINGLE SUPPLY +5V(V= +5V, V = 0, V = +5V, AGND = DGND = 0, V _ = 1.75V, R = 150Ωto AGND, A = +1V/V, and T = +25°C, unless oth-MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersSWITCHING CHARACTERISTICS((V CC - V EE ) = +4.5V to +10.5V, V DD = +2.7V to +5.5V, DGND = AGND = 0, V IN _ = 0 for dual supplies, V IN _ = +1.75V for single supply, R L = 150Ωto AGND, C L = 100pF , A V = +1V/V, and T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)offset voltage.Note 2:Logic-level characteristics apply to the following pins: DIN, DOUT, SCLK, CE , UPDATE , RESET , A3–A0, MODE, and AOUT .Note 3:Switching transient settling time is guaranteed by the settling time (t S ) specification. Switching transient is a result of updat-ing the switch matrix.Note 4:Input test signal: 3.58MHz sine wave of amplitude 40IRE superimposed on a linear ramp (0 to 100IRE). IRE is a unit ofvideo-signal amplitude developed by the International Radio Engineers: 140IRE = 1.0V.Note 5:All devices are 100% production tested at T A = +25°C. Specifications over temperature limits are guaranteed by design.M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O BuffersMAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersFigure 1. Timing DiagramM A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers Typical Operating Characteristics—Dual Supplies ±5V(V CC = +5V and V EE = -5V, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)3-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000MEDIUM-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000SMALL-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000MEDIUM-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000SMALL-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-620.3-0.70.11101001000LARGE-SIGNAL GAIN FLATNESSvs. FREQUENCY-0.5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-0.3-0.10.10-0.2-0.4-0.60.20.3-0.70.11101001000LARGE-SIGNAL GAIN FLATNESSvs. FREQUENCY-0.5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-0.3-0.10.10-0.2-0.4-0.60.23-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE(A V = +1V/V)-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-62MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersTypical Operating Characteristics—Dual Supplies ±5V (continued)(V CC = +5V and V EE = -5V, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)3-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE(A V = +2V/V)-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-620.11011001000MEDIUM-SIGNAL FREQUENCY RESPONSE(A V = +1V/V)FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-10-5510157-30.11101001000MEDIUM-SIGNAL FREQUENCY RESPONSE(A V = +2V/V)-1FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )135420-26-40-1000.11010011000FREQUENCY (MHz)C R OS S T A L K (d B )-90-80-70-60-50CROSSTALK vs. FREQUENCY-40-1000.11010011000FREQUENCY (MHz)C R O S S T A L K (d B )-90-80-70-60-50CROSSTALK vs. FREQUENCY-10-1000.1100101DISTORTION vs. FREQUENCY-70-90-30-500-60-80-20-40FREQUENCY (MHz)D I S T O R T I ON (d B c )-10-1000.1100101DISTORTION vs. FREQUENCY-70-90-30-500-60-80-20-40FREQUENCY (MHz)D I S T O R T I O N (d B c )0.11011001000ENABLED OUTPUT IMPEDANCEvs. FREQUENCYM A X 4355 t o c 17FREQUENCY (MHz)O U T P U T I M P E D A N C E (Ω)1000-0.11101001M 1100k 10M 100M 1M 1GM A X 4355 t o c 18FREQUENCY (Hz)O U T P U T I M P E D A N C E (Ω)101001k 10k 100k DISABLED OUTPUT IMPEDANCEvs. FREQUENCYM A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers Typical Operating Characteristics—Dual Supplies ±5V (continued)(V CC = +5V and V EE = -5V, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)-40-50-60-70-80-90-100-110-120100k10M 100M1M1GM A X 4355 t o c 19FREQUENCY (Hz)O F F -I S O L A T I O N (d B )OFF-ISOLATION vs. FREQUENCY10k1M 100k10M100MPOWER-SUPPLY REJECTION RATIOvs. FREQUENCYFREQUENCY (Hz)P S R R (d B )-75-70-60-65-55-50100011010k100k1M1001k10MINPUT VOLTAGE NOISE vs. FREQUENCY100M A X 4355 t oc 21FREQUENCY (Hz)V O L T A G E N OI S E (n V /H z)25ns/divLARGE-SIGNAL PULSE RESPONSE(A V = +1V/V)INPUT 1V/divOUTPUT 0.5V/divMAX4355 toc2225ns/divLARGE-SIGNAL PULSE RESPONSE(A V = +2V/V)INPUT 0.5V/divOUTPUT 0.5V/divMAX4355 toc2325ns/divMEDIUM-SIGNAL PULSE RESPONSE(A V = +1V/V)INPUT 100mV/divOUTPUT 50mV/divMAX4355 toc2425ns/div MEDIUM-SIGNAL PULSE RESPONSE(A V = +2V/V)INPUT 50mV/div OUTPUT 50mV/div MAX4355 toc2520ns/div SWITCHING TIME (A V = +1V/V)V UPDATE 5V/div V OUT 500mV/div MAX4355 toc2620ns/divSWITCHING TIME (A V = +2V/V)V UPDATE 5V/divV OUT 1V/divMAX4355 toc27MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersTypical Operating Characteristics—Dual Supplies ±5V (continued)(V CC = +5V and V EE = -5V, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)20ns/div SWITCHING TRANSIENT (GLITCH)(A V = +1V/V)V 5V/div V OUT 25mV/div MAX4355 toc2820ns/div SWITCHING TRANSIENT (GLITCH)(A V = +2V/V)V UPDATE 5V/divV OUT 25mV/divMAX4355 toc2910050200150250300-15-11-9-7-13-5-3-1135OFFSET VOLTAGE DISTRIBUTIONOFFSET VOLTAGE (mV)-0.0501020304050607080901000102030405060708090100DIFFERENTIAL GAIN AND PHASE(R L = 150Ω)00-0.020.050.020.040.100.060.080.15IRED I F FE R E N T I A L P H A S E (°)D I F FE R E N T I A L G A I N (%)M A X 4355 t o c 310.01001020304050607080901000102030405060708090100DIFFERENTIAL GAIN AND PHASE(R L = 1k Ω)-0.0040.02-0.00200.0020.0040.03IRED I F FE R E N T I A L G A I N (%)MA X 4355 t o c 32-0.01D I F FE R E N T I A L P H A S E (°)25ns/divLARGE-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD (C L = 30pF, A V = +1V/V)INPUT 1V/divOUTPUT 0.5/VdivMAX4355 toc3325ns/divLARGE-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD (C L = 30pF, A V = +2V/V)INPUT 0.5V/divOUTPUT 0.5V/divMAX4355 toc3425ns/div MEDIUM-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD (C L = 30pF, A V = +1V/V)INPUT 100mV/div OUTPUT 50mV/div MAX4355 toc3525ns/divMEDIUM-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD (C L = 30pF, A V = +2V/V)INPUT 50mV/divOUTPUT 50mV/divMAX4355 toc36M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers Typical Operating Characteristics—Dual Supplies ±5V (continued)(V CC = +5V and V EE = -5V, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)-0.20-0.15-0.10-0.0500.050.100.150.20-50-25255075100GAIN vs. TEMPERATURETEMPERATURE (°C)N O R M A L I Z E D G A I N (d B )1p10n 1µ100p 10p 1n100n 10µ100µ10n10µ1µ100n 100µ1m 10m 100m101R E S E T D E L A Y (s )C RESET (F)020104030605070-5025-255075100SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersTypical Operating Characteristics—Dual Supplies ±3V(V CC = +3V and V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)3-70.11101001000LARGE-SIGNAL FREQUENCYRESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000MEDIUM-SIGNAL FREQUENCYRESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000SMALL-SIGNAL FREQUENCYRESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000LARGE-SIGNAL FREQUENCYRESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000MEDIUM-SIGNAL FREQUENCYRESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000SMALL-SIGNAL FREQUENCYRESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-620.3-0.70.11101001000LARGE-SIGNAL GAIN FLATNESS-0.5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-0.3-0.10.10-0.2-0.4-0.60.20.3-0.70.11101001000LARGE-SIGNAL GAIN FLATNESS-0.5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-0.3-0.10.10-0.2-0.4-0.60.23-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE(A V = +1V/V)-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-62M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers Typical Operating Characteristics—Dual Supplies ±3V (continued)(V CC = +3V and V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)3-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE(A V = +2V/V)-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-628-80.11101001000MEDIUM-SIGNAL FREQUENCY RESPONSE(A V = +1V/V)FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-2240-4-666-40.11101001000MEDIUM-SIGNAL FREQUENCY RESPONSE(A V= +2V/V)-2FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )02431-1-35-40-901k1M 10M 100M 1G CROSSTALK VS. FREQUENCY-80FREQUENCY (Hz)C R O S S T A L K (d B )-70-60-50-55-65-75-85-45-30-800.11101001000CROSSTALK VS. FREQUENCY-70FREQUENCY (MHz)C R O S S T A L K (d B )-60-50-40-45-55-65-75-35-10-1000.1100101DISTORTION VS. FREQUENCY-70-90-30-500-60-80-20-40FREQUENCY (MHz)D I S T O R T I O N (d B c )-10-1000.1100M 10M 1M DISTORTION VS. FREQUENCY-70-90-30-500-60-80-20-40FREQUENCY (Hz)C R O S S T A L K (d B c )0.11011001000ENABLED OUTPUT IMPEDANCEVS. FREQUENCYM A X 4355 t o c 56FREQUENCY (MHz)O U T P U T I M P E D A N C E (Ω)10000.11101001M10.11010011000DISABLED OUTPUT IMPEDANCEVS. FREQUENCYM A X 4355 t o c 57FREQUENCY (MHz)O U T P U T I M P E D A N C E (Ω)101001k 10k 100kMAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersTypical Operating Characteristics—Dual Supplies ±3V (continued)(V CC = +3V and V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)-40-50-60-70-80-90-100-110-120100k10M 100M1M1GOFF-ISOLATION VS. FREQUENCYA X 4355 t o c 58FREQUENCY (Hz)O F F -I S O L A T I O N (d B )-55-7510k100k10M100MPOWER-SUPPLY REJECTION RATIOVS. FREQUENCY-70-65-60M A X 4355 t o c 59FREQUENCY (Hz)P S R R (d B )1M 1000101010k100k1M1001k10MINPUT VOLTAGE NOISE vs. FREQUENCY100M A X 4355 t o c 60FREQUENCY (Hz)V O L T A G E NO I S E (n V /√H z )LARGE-SIGNAL PULSE RESPONSE(A V = +1V/V)M A X 4355t o c 61OUTPUT 0.5V/div INPUT 1V/div25ns/divLARGE-SIGNAL PULSE RESPONSE(A V = +2V/V)MAX4355 toc62OUTPUT 0.5V/divINPUT 0.5V/div25ns/div MEDIUM-SIGNAL PULSE RESPONSE(A V = +1V/V)MAX4355 toc63OUTPUT 50mV/divINPUT 100mV/div25ns/divMEDIUM-SIGNAL PULSE RESPONSE(A V = +2V/V)MAX4355 toc64OUTPUT 50mV/divINPUT 50mV/div25ns/divSWITCHING TIME (A V = +1V/V)MAX4355 toc65V OUT 500mV/div V UPDATE 3V/div20ns/div SWITCHING TIME (A V = +2V/V)MAX4355 toc66V OUT 1V/divV UPDATE 3V/div20ns/divM A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers Typical Operating Characteristics—Dual Supplies ±3V (continued)(V CC = +3V and V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)SWITCHING TRANSIENT (GLITCH)MAX4355 toc67(A V = +1V/V)V OUT 25mV/divV UPDATE3V/div 20ns/div SWITCHING TRANSIENT (GLITCH)MAX4355 toc68(A V = +2V/V)V OUT 25mV/divV UPDATE 3V/div20ns/div500150100250200300-15-11-9-7-13-5-3-1135OFFSET VOLTAGE DISTRIBUTIONOFFSET VOLTAGE (mV)0.050-0.050.150.100.200.050-0.050.150.100.200.25103040502060708090100DIFFERENTIAL GAIN AND PHASE(R L = 150Ω)M A X 4355 t o c 70IRED I F FE R E N T I A L G A I N (%)D I F FE R E N T I A L P H A S E (°)0.020-0.020.060.040.08103040502060708090100DIFFERENTIAL GAIN AND PHASE(R L = 1k Ω)M A X 4355 t o c 71IRED I F FE R E N T I A L G A I N (%)D I F FE R E N T I A L P H A S E (°)-0.015-0.0200-0.0100.0050.010LARGE-SIGNAL PULSE RESPONSEWITH CAPACITIVE LOAD(C L = 30pF, A V = +1V/V)MAX4355 toc72OUTPUT 500mV/divINPUT 1V/div25ns/divLARGE-SIGNAL PULSE RESPONSEWITH CAPACITIVE LOAD (C L = 30pF, A V = +2V/V)MAX4355 toc73OUTPUT 0.5V/divINPUT 0.5V/div 25ns/divMEDIUM-SIGNAL PULSE RESPONSEWITH CAPACITIVE LOAD (C L = 30pF, A V = +1V/V)MAX4355 toc74OUTPUT 50mV/divINPUT 100mV/div25ns/divMEDIUM-SIGNAL PULSE RESPONSEWITH CAPACITIVE LOAD (C L = 30pF, A V = +2V/V)MAX4355 toc75OUTPUT 50mV/divINPUT 50mV/div25ns/divMAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersTypical Operating Characteristics—Dual Supplies ±3V (continued)(V CC = +3V and V EE = -3V, V DD = +3V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, and T A = +25°C, unless otherwise noted.)-50-25255075100GAIN VS. TEMPERATURETEMPERATURE (°C)N O R M A L I Z E D G A I N (d B )-0.20-0.15-0.05-0.100.100.150.050.2001p 10n 1µ100p 10p 1n 100n 10µ100µ10n10µ1µ100n 100µ1m 10m 100m 101RESET DELAY vs. RESET CAPACITANCER E S E T D E L A Y (s )C RESET (F)3-7100k1M10M 100M1GLARGE-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (Hz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-62M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers Typical Operating Characteristics—Single Supply +5V(V CC = +5V and V EE = 0, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, A V = +1V/V, and T A = +25°C, unless otherwise noted.)3-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000MEDIUM-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-70.11101001000SMALL-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-7100k1M10M 100M1GMEDIUM-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (Hz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-623-7100k1M10M 100M1GSMALL-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (Hz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-620.3-0.70.11101001000LARGE-SIGNAL GAIN FLATNESS-0.5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-0.3-0.10.10-0.2-0.4-0.60.20.3-0.70.11101001000LARGE-SIGNAL GAIN FLATNESS-0.5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-0.3-0.10.10-0.2-0.4-0.60.23-70.11101001000LARGE-SIGNAL FREQUENCY RESPONSE-5FREQUENCY (MHz)N O R M A L I Z E D G A I N (d B )-3-110-2-4-62MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersTypical Operating Characteristics—Single Supply +5V (continued)(V CC = +5V and V EE = 0, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, A V = +1V/V, and T A = +25°C, unless otherwise noted.)7-7100k1M10M 100M1GMEDIUM-SIGNAL FREQUENCY RESPONSEFREQUENCY (Hz)N O R M A L I Z E D G A I N (d B )-113-3-55-50-100100k1M10M100M1GCROSSTALK vs. FREQUENCY-90M A X 4355 t o c 88FREQUENCY (MHz)C R O S S T A L K (d B )-80-70-60-65-75-85-95-550-1000.1110100DISTORTION vs. FREQUENCY-80FREQUENCY (MHz)D I S T O R T I O N (Ω)-60-40-20-30-50-70-90-100.11011001000ENABLED OUTPUT IMPEDANCEvs. FREQUENCYM A X 4355 t o c 90FREQUENCY (MHz)O U T P U T I M P E D A N C E (Ω)1k 0.11101001M 1100k10M 100M1M1GM A X 4355 t o c 91FREQUENCY (Hz)O U T P U T I M P E D A N C E (Ω)101001k 10k 100k DISABLED OUTPUT IMPEDANCEvs. FREQUENCY-40-50-60-70-80-90-100-110-120100k10M 100M1M1GM A X 4355 t o c 92FREQUENCY (Hz)O F F -I S O L A T I O N(d B )OFF-ISOLATION vs. FREQUENCY10k1M 100k10M100MPOWER-SUPPLY REJECTION RATIOvs. FREQUENCYFREQUENCY (Hz)P S R R (d B )-75-70-60-65-55-50100011010k100k1M1001k10MINPUT VOLTAGE NOISE vs. FREQUENCY100M A X 4355 t o c 94FREQUENCY (Hz)V O L T A G E N O I S E (n V /H z )LARGE-SIGNAL PULSE RESPONSEMAX4355 toc9525ns/divINPUT 1V/divOUTPUT 0.5V/divM A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O Buffers Typical Operating Characteristics—Single Supply +5V (continued)(V CC = +5V and V EE = 0, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, A V = +1V/V, and T A = +25°C, unless otherwise noted.)MEDIUM-SIGNAL PULSE RESPONSEMAX4355 toc9625ns/div INPUT 100mV/divOUTPUT 50mV/divSWITCHING TIMEMAX4355 toc9720ns/divV UPDATE 5V/divV OUT 500mV/divSWITCHING TRANSIENT (GLITCH)MAX4355 toc9820ns/divV UPDATE 5V/divV OUT 25mV/div50150100200250-20-16-14-12-18-10-8-6-4-2OFFSET VOLTAGE HISTOGRAMOFFSET VOLTAGE (mV)-0.101020304050607080901000102030405060708090100DIFFERENTIAL GAIN AND PHASE(R L = 150Ω)00.200.100-0.100.10.20.300.3IRED I F FE R E N T I A L P H A S E (°)D I F FE R E N T I A L G A I N (%)M A X 4355 t o c 100-0.0201020304050607080901000102030405060708090100DIFFERENTIAL GAIN AND PHASE(R L = 1k Ω)00.100-0.10-0.200.020.040.200.06IRED I F FE R E N T I A L P H A S E (°)D I F FE R E N T I A L G A I N (%)M A X 4355 t o c 101MAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersLARGE-SIGNAL PULSE RESPONSE WITHCAPACITIVE LOAD (C L = 30pF)MAX4355 toc10225ns/divINPUT 1V/divOUTPUT 0.5V/divMEDIUM-SIGNAL PULSE RESPONSE WITHCAPACITIVE LOAD (C L = 30pF)MAX4355 toc10325ns/divINPUT 100mV/divOUTPUT 50mV/div-0.20-0.15-0.10-0.0500.050.100.150.20-50-25255075100GAIN vs. TEMPERATUREM A X 4355 t o c 104TEMPERATURE (°C)N O R M A L I Z E D G A I N (d B )1p 10n 1µ100p 10p 1n 100n 10µ100µ10n10µ1µ100n 100µ1m 10m 100m 101R E S E T D E L A Y (s )C RESET (F)RESET DELAY vs. RESET CAPACITANCETypical Operating Characteristics—Single Supply +5V (continued)(V CC = +5V and V EE = 0, V DD = +5V, AGND = DGND = 0, V IN_= 0, R L = 150Ωto AGND, A V = +1V/V, and T A = +25°C, unless otherwise noted.)M A X 435516x 16 Nonblocking Video Crosspoint Switch with I/O BuffersMAX435516x 16 Nonblocking Video Crosspoint Switchwith I/O BuffersDetailed DescriptionThe MAX4355 is a highly integrated 16 ✕16 nonblock-ing video crosspoint switch matrix. All inputs and out-puts are buffered, with all outputs able to drive standard 75Ωreverse-terminated video loads.A 3-wire interface programs the switch matrix and ini-tializes with a single update signal. The unique serial interface operates in one of two modes: Complete Matrix Mode (Mode 1) or Individual Output Address Mode (Mode 0).In the Functional Diagram, the signal path of the MAX4355 is from the inputs (IN0–IN15), through the switching matrix, buffered by the output amplifiers, and presented at the output terminals (OUT0–OUT15). The other functional blocks are the serial interface and con-trol logic. Each of the functional blocks is described in detail below.Analog OutputsThe MAX4355 outputs are high-speed voltage feed-back amplifiers capable of driving 150Ω(75Ωback-ter-minated) loads. The gain, A V = +1V/V or +2V/V, is selectable through programming bit 4 of the serial con-trol word. Amplifier compensation is automatically opti-mized to maximize the bandwidth for each gain selec-tion. Each output can be individually enabled and dis-abled through bit 5 of the serial control word. When disabled, the output is high impedance, presenting typ-ically a 4k Ωload, and 3pF output capacitance, allowing multiple outputs to be connected together in building large arrays. On power-up (or asynchronous RESET ),all outputs are initialized in the disabled state to avoid output conflicts in large-array configurations. The pro-gramming and operation of the MAX4355 is output referred. Outputs are configured individually to connect to any one of the 16 analog inputs, programmed to the desired gain (A V = +1V/V or +2V/V), or disabled in a high-impedance state.Analog InputsThe MAX4355 offers 16 analog input channels. Each input is buffered before the crosspoint switch matrix,allowing one input to cross-connect to up to 16 outputs.The input buffers are voltage feedback amplifiers with high-input impedance and low-input bias current. This allows the use of very simple input clamp circuits.Functional Diagram。