MAX1684-85(E)

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_______________________________概述MAX481、MAX483、MAX485、MAX487-MAX491以及MAX1487是用于RS-485与RS-422通信的低功耗收发器，每个器件中都具有一个驱动器和一个接收器。

MAX483、MAX487、MAX488以及MAX489具有限摆率驱动器，可以减小EMI ，并降低由不恰当的终端匹配电缆引起的反射，实现最高250k b p s 的无差错数据传输。

M A X 481、MAX485、MAX490、MAX491、MAX1487的驱动器摆率不受限制，可以实现最高2.5Mbps 的传输速率。

这些收发器在驱动器禁用的空载或满载状态下，吸取的电源电流在120(A 至500(A 之间。

另外，MAX481、MAX483与MAX487具有低电流关断模式，仅消耗0.1µA 。

所有器件都工作在5V 单电源下。

驱动器具有短路电流限制，并可以通过热关断电路将驱动器输出置为高阻状态，防止过度的功率损耗。

接收器输入具有失效保护特性，当输入开路时，可以确保逻辑高电平输出。

MAX487与MAX1487具有四分之一单位负载的接收器输入阻抗，使得总线上最多可以有128个M A X 487/MAX1487收发器。

使用MAX488-MAX491可以实现全双工通信，而MAX481、MAX483、MAX485、MAX487与MAX1487则为半双工应用设计。

_______________________________应用低功耗RS-485收发器低功耗RS-422收发器电平转换器用于EMI 敏感应用的收发器工业控制局域网____________________下一代器件的特性♦容错应用MAX3430: ±80V 故障保护、失效保护、1/4单位负载、+3.3V 、RS-485收发器MAX3440E-MAX3444E: ±15kV ESD 保护、±60V 故障保护、10Mbps 、失效保护、RS-485/J1708收发器♦对于空间受限应用MAX3460-MAX3464: +5V 、失效保护、20Mbps 、Profibus RS-485/RS-422收发器MAX3362: +3.3V 、高速、RS-485/RS-422收发器，采用SOT23封装MAX3280E-MAX3284E: ±15kV ESD 保护、52Mbps 、+3V 至+5.5V 、SOT23、RS-485/RS-422、真失效保护接收器MAX3293/MAX3294/MAX3295: 20Mbps 、+3.3V 、SOT23、RS-485/RS-422发送器♦对于多通道收发器应用MAX3030E-MAX3033E: ±15kV ESD 保护、+3.3V 、四路RS-422发送器♦对于失效保护应用MAX3080-MAX3089: 失效保护、高速(10Mbps)、限摆率RS-485/RS-422收发器♦对于低电压应用MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E: +3.3V 供电、±15kV ESD 保护、12Mbps 、限摆率、真正的RS-485/RS-422收发器MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487低功耗、限摆率、RS-485/RS-422收发器_____________________________________________________________________选择表19-0122; Rev 8; 10/03定购信息在本资料的最后给出。

MAX485中文资料2009-11-28 14:49MAX485中文资料，MAX485 PDF,DATASHEET,电路图，通讯程序内容介绍：MAX481、MAX483、MAX485、MAX487-MAX491以及MAX1487是用于RS-485与RS-422通信的低功耗收发器，每个器件中都具有一个驱动器和一个接收器。

MAX483、MAX487、MAX488以及MAX489具有限摆率驱动器，可以减小EMI，并降低由不恰当的终端匹配电缆引起的反射，实现最高250kbps 的无差错数据传输。

MAX481、MAX485、MAX490、MAX491、MAX1487的驱动器摆率不受限制，可以实现最高2.5Mbps的传输速率。

这些收发器在驱动器禁用的空载或满载状态下，吸取的电源电流在120(A 至500(A 之间。

另外，MAX481、MAX483与MAX487具有低电流关断模式，仅消耗0.1µA。

所有器件都工作在5V单电源下。

驱动器具有短路电流限制，并可以通过热关断电路将驱动器输出置为高阻状态，防止过度的功率损耗。

接收器输入具有失效保护特性，当输入开路时，可以确保逻辑高电平输出。

MAX481,MAX483,MAX485,MAX487,MAX1487引脚（管脚）图及工作电路MAX485通讯程序与MAX232通讯程序在本质上是一样的，只是MAX485通讯程序需要加上通讯方向控制。

下面是基于mega128 16AU的485通信中断接收的程序，调试通过,晶振为外部16M,MAX485的DE和RE短接连PC0口，程序如下：#define SEND_485 PORTC|=0x01#define READ_485 PORTC&=0xfevoid Usart1_init(void) //16Mhz频率，设置波特率9.6k，8位数据位，无校验，接收发送使能，1位停止位{UBRR1H=0;UBRR1L=103;UCSR1B=(1<<RXCIE1)|(1<<RXEN1)|(1<<TXEN1); //发送接收使能，使用中断方式，UCSR1C=(1<<UCSZ10)|(1<<UCSZ11); //0x06 8位数据，1位停止位，无校验}void Usart1_transmit(unsigned char c) //查询方式发送接收字符函数{SEND_485;DelayBus();DelayBus();DelayBus();while( !(UCSR1A&(1<<UDRE1)));//等待发送缓冲区为空UDR1=c;while(!(UCSR1A&(1<<TXC1)));// UDCR0=c;UCSR1A |= _BV(TXC1);//将发送结束标志位清零// SET_BIT(UCSR1A,);READ_485;direction++;}SIGNAL(SIG_UART1_RECV)//serial port 1 {if(UCSR1A&(1<<RXC1)){rec1buff=UDR1;rec1_flag=1;。

导航菜单公司简介公司新闻产品及服务商机信息人才招聘留言反馈深圳市鑫利发电子有限公司『商机信息』商机主题：鑫利发电子供应各种IC电路!供求方向：供应关键字：IC规格：原装数量：0价格：0发布日期：2010-06-11 15:56:24有效日期：2017-04-14 21:37:38阅读次数：2188描述：PIC12C508A 大量现货 DIP8 05/06+PIC12C509A 大量现货 DIP8 05/06+PIC12F508 大量现货 DIP8 05/06+PIC12F629 大量现货 DIP8 05/06+PIC12F675 大量现货 DIP8 05/06+PIC16C54 大量现货 DIP18 05/06+PIC16C57 大量现货 DIP28宽 05/06+PIC16F54 大量现货 DIP18 05/06+PIC16F57 大量现货 DIP28 05/06+PIC16F630 大量现货 DIP14 05/06+PIC16F676 大量现货 DIP14 05/06+PIC16F84A 大量现货 DIP18 05/06+PIC16F628 大量现货 DIP18 05/06+PIC16F628A 大量现货 DIP18 05/06+PIC16F72 大量现货 DIP28窄 05/06+PIC16F73 大量现货 DIP28窄 05/06+2N3904S KEC SOT-23 05/06+2N3906S KEC SOT-23 05/06+MPS8050D KEC TO-92 05/06+MPS8550D KEC TO-92 05/06+KTC9014C KEC TO-92 05/06+KTC9015C KEC TO-92 05/06+KTC8050D KEC TO-92 05/06+2SC1623 NEC L6 05/06+2SC4226 NEC R24/R25 05/06+BAT85 1500 PHILIPS SMD 5BAV199 100000 PHILIPS SOT23 5BAV23 100000 PHILIPS SOT143 05+BAV23S 100000 PHILIPS SOT23 05+BAV70 10000 PHILIPS SOT23 5BAV99 100000 PHILIPS SOT23 5BAW56 800k PHILIPS SOT23 5BB145B 100000 PHILIPS SOD523 05+BB148 100000 PHILIPS SOD323 05+BB149 100000 PHILIPS SOD323 05+BB155 100000 PHILIPS SOD323 05+BB156 100000 PHILIPS SOD323 04+BB187 100000 PHILIPS SOD523 05+BB555 100000 INFINEON SOD323 05+BB804 100000 INFINEON SOD323 05+BC807-16 100000 PHILIPS SOT23 04+BC807-25 100000 PHILIPS SOT23 5BC807-40 100000 PHILIPS SOT23 5BC817-16 100000 PHILIPS SOT23 5BC817-25 100000 PHILIPS SOT23 5BC817-25W 3000 PHILIPS SMD 05+BC817-40 100000 PHILIPS SOT23 5BC817-40W 33000 PHILIPS SMD 05+BC817W 15000 PHILIPS SMD 05+BC846B 10000 PHILIPS SOT23 5BC847A 100000 PHILIPS SOT23 5BC847发送合作加入询盘车返回打印本页深圳市鑫利发电子有限公司技术支持：顶峰商业服务网© 2004-201031157。

General DescriptionThe MAX8510/MAX8511/MAX8512 ultra-low-noise, low-dropout (LDO) linear regulators are designed to deliver up to 120mA continuous output current. These regulators achieve a low 120mV dropout for 120mA load current. The MAX8510 uses an advanced architecture to achieve ultra-low output voltage noise of 11μV RMS and PSRR of 54dB at 100kHz.The MAX8511 does not require a bypass capacitor, hence achieving the smallest PC board area. The MAX8512’s output voltage can be adjusted with an external divider.The MAX8510/MAX8511 are preset to a variety of voltag-es in the 1.5V to 4.5V range. Designed with a P-channel MOSFET series pass transistor, the MAX8510/MAX8511/MAX8512 maintain very low ground current (40μA).The regulators are designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8510 requires only 1μF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1μA.Package options include a 5-pin SC70 and a tiny 2mm x 2mm x 0.8mm TDFN package.Applications●Cellular and Cordless Phones ●PDA and Palmtop Computers ●Base Stations●Bluetooth Portable Radios and Accessories ●Wireless LANs ●Digital Cameras ●Personal Stereos●Portable and Battery-Powered EquipmentFeatures●Space-Saving SC70 and TDFN (2mm x 2mm) Packages ●11μV RMS Output Noise at 100Hz to 100kHzBandwidth (MAX8510)●78dB PSRR at 1kHz (MAX8510) ●120mV Dropout at 120mA Load●Stable with 1μF Ceramic Capacitor for Any Load ●Guaranteed 120mA Output●Only Need Input and Output Capacitors (MAX8511) ●Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V,2.85V, 3V,3.3V,4.5V (MAX8510/MAX8511) and Adjustable (MAX8512) ●Low 40μA Ground Current ●Excellent Load/Line Transient●Overcurrent and Thermal Protection19-2732; Rev 5; 5/19Output Voltage Selector Guide appears at end of data sheet.Ordering Information continued at end of data sheet.*xy is the output voltage code (see Output Voltage Selector Guide). Other versions between 1.5V and 4.5V are available in 100mV increments. Contact factory for other versions.+Denotes a lead(Pb)-free/RoHS-compliant package.T = Tape and reel.PART*TEMP RANGE PIN-PACKAGEMAX8510EXKxy+T -40°C to +85°C 5 SC70MAX8510/MAX8511/MAX8512Ultra-Low-Noise, High PSRR,Low-Dropout, 120mA Linear RegulatorsOrdering InformationClick here for production status of specific part numbers.IN to GND ................................................................-0.3V to +7V Output Short-Circuit Duration ...........................................Infinite OUT, SHDN to GND .....................................-0.3V to (IN + 0.3V)FB, BP , N.C. to GND ................................-0.3V to (OUT + 0.3V)Continuous Power Dissipation (T A = +70°C)5-Pin SC70 (derate 3.1mW/°C above +70°C) .............0.247W 8-Pin TDFN (derate 11.9mW/°C above = 70°C) .........0.953W Operating Temperature Range ...........................-40°C to +85°CMilitary Operating Temperature Range .............-55°C to +110°C Junction Temperature ......................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C Lead (Pb)-free packages .................................................+260°C Packages containing lead (Pb) .......................................+240°C(Note 1)SC70Junction-to-Ambient Thermal Resistance (θJA ) ........324°C/W Junction-to-Case Thermal Resistance (θJC ) .............115°C/WTDFNJunction-to-Ambient Thermal Resistance (θJA ) .......83.9°C/W Junction-to-Case Thermal Resistance (θJC ) ...............37°C/W(V IN = V OUT + 0.5V, T A = -40°C to +85°C, unless otherwise noted. C IN = 1μF, C OUT = 1μF, C BP = 10nF. Typical values are at +25°C; the MAX8512 is tested with 2.45V output, unless otherwise noted.) (Note 2)PARAMETER SYMBOL CONDITIONSMIN TYPMAX UNITS Input Voltage Range V IN26VOutput Voltage Accuracy I OUT = 1mA, T A = +25°C-1+1%I OUT = 100µA to 80mA, T A = +25°C -2+2I OUT = 100µA to 80mA-3+3Maximum Output Current I OUT 120mA Current LimitI LIMV OUT = 90% of nominal value 130200300mA Dropout Voltage (Note 3)V OUT ≥ 3V, I OUT = 80mA 80170mVV OUT ≥ 3V, I OUT = 120mA1202.5V ≤ V OUT < 3V, I OUT = 80mA 902002.5V ≤ V OUT < 3V, I OUT = 120mA 1352V ≤ V OUT < 2.5V, I OUT = 80mA 1202502V ≤ V OUT < 2.5V, I OUT = 120mA180Ground Current I Q I OUT = 0.05mA4090µA V IN = V OUT (nom) - 0.1V, I OUT = 0mA 220500Line Regulation V LNR V IN = (V OUT + 0.5V) to 6V, I OUT = 0.1mA 0.001%/V Load RegulationV LDR I OUT = 1mA to 80mA 0.003%/mA Shutdown Supply CurrentI SHDNV SHDN = 0VT A = +25°C 0.0031µAT A = +85°C 0.05Ripple RejectionPSRRf = 1kHz, I OUT = 10mAMAX851078dBMAX8511/MAX851272f = 10kHz, I OUT = 10mA MAX851075MAX8511/MAX851265f = 100kHz, I OUT = 10mAMAX851054MAX8511/ MAX851246MAX8512Low-Dropout, 120mA Linear RegulatorsAbsolute Maximum RatingsStresses 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.Electrical CharacteristicsPackage Thermal Characteristics Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layerboard. For detailed information on package thermal considerations, refer to /thermal-tutorial .(V IN = V OUT + 0.5V, T A = -40°C to +85°C, unless otherwise noted. C IN = 1μF, C OUT = 1μF, C BP = 10nF. Typical values are at +25°C; the MAX8512 is tested with 2.45V output, unless otherwise noted.) (Note 2)Note 2: Limits are 100% tested at +25°C. Limits over operating temperature range are guaranteed by design.Note 3: Dropout is defined as V IN - V OUT when V OUT is 100mV below the value of V OUT for V IN = V OUT + 0.5V.Note 4: Time needed for V OUT to reach 90% of final value.(V IN = V OUT + 0.5V, C IN = 1μF, C OUT = 1μF, C BP = 10nF, T A = +25°C, unless otherwise noted.)PARAMETER SYMBOLCONDITIONSMINTYP MAXUNITSOutput Noise Voltage (RMS)f = 100Hz to 100kHz, I LOAD = 10mA MAX851011µVMAX8511/MAX8512230f = 100Hz to 100kHz, I LOAD = 80mA MAX851013MAX8511/MAX8512230Shutdown Exit Delay R LOAD = 50Ω (Note 4)300µs SHDN Logic Low Level V IN = 2V to 6V 0.4V SHDN Logic High Level V IN = 2V to 6V 1.5V SHDN Input Bias Current V IN = 6V, V SHDN = 0V or 6VT A = +25°C µA T A = +85°C 0.01FB Input Bias Current (MAX8512)V IN = 6V,V FB = 1.3VT A = +25°C 0.0060.1µA T A = +85°C0.01Thermal Shutdown 160°C Thermal-Shutdown Hysteresis10°C MAX8510OUTPUT VOLTAGE ACCURACYvs. LOAD CURRENTM A X 8510 t o c 02LOAD CURRENT (mA)% D E V I A T I O N (%)10080604020-0.4-0.200.20.40.6-0.60120MAX8510OUTPUT VOLTAGE ACCURACYvs. TEMPERATURETEMPERATURE (°C)% D E V I A T I O N (%)603510-15-0.8-0.6-0.4-0.200.20.40.60.81.0-1.0-4085MAX8510OUTPUT VOLTAGE vs. INPUT VOLTAGEINPUT VOLTAGE (V)O U T P U T V O L T A G E (V )543210.51.01.52.02.53.00.06MAX8512Low-Dropout, 120mA Linear RegulatorsElectrical Characteristics (continued)Typical Operating Characteristics(V IN = V OUT + 0.5V, C IN = 1μF, C OUT = 1μF, C BP = 10nF, T A = +25°C, unless otherwise noted.)MAX8510DROPOUT VOLTAGE vs. OUTPUT VOLTAGEOUTPUT (V)D R O P O U T V O L T A G E (m V )3.02.82.62.42.2501001502002502.03.2MAX8510GROUND PIN CURRENT vs. TEMPERATUREM A X 8510 t o c 08TEMPERATURE (°C)G R O U N D P I N C U R R E N T (µA )603510-153540455030-4085MAX8510OUTPUT NOISE400µs/divMAX8510GROUND PIN CURRENT vs. INPUT VOLTAGEINPUT VOLTAGE (V)G R O U N D P I N C U R R E N T (µA )43211502005010025030035005MAX8510PSRR vs. FREQUENCYFREQUENCY (kHz)P S R R (d B )1101000.14050601020307080900.011000MAX8510OUTPUT NOISE SPECTRAL DENSITYvs. FREQUENCYMAX8510 toc12FREQUENCY (kHz)O U T P U T N O I S E D E N S I T Y (n V /H z )0.11101001.E+031.E+021.E+041.E+010.011000MAX8510DROPOUT VOLTAGE vs. LOAD CURRENTLOAD CURRENT (mA)D R O P O U T V O L T A G E (m V )1008060402030609012015000120MAX8510GROUND PIN CURRENT vs. LOAD CURRENTLOAD CURRENT (mA)G R O U N D P I N C U R R E N T (µA )10080604020408012016020024000120MAX8511PSRR vs. FREQUENCYFREQUENCY (kHz)P S R R (d B )0.111010040506010203070809000.011000MAX8512Low-Dropout, 120mA Linear RegulatorsTypical Operating Characteristics (continued)(V IN = V OUT + 0.5V, C IN = 1μF, C OUT = 1μF, C BP = 10nF, T A= +25°C, unless otherwise noted.)MAX8510LOAD TRANSIENT RESPONSE1ms/div V OUT 10mV/divMAX8510EXITING SHUTDOWN WAVEFORM20µs/divV OUT = 2.85VR LOAD = 47ΩOUTPUT VOLTAGE 2V/divSHUTDOWN VOLTAGEMAX8510LOAD TRANSIENT RESPONSE NEAR DROPOUT1ms/divV OUT 10mV/divMAX8510ENTERING SHUTDOWN DELAY40µs/divC BP = 0.01µFOUTPUT VOLTAGE 2V/divSHUTDOWN VOLTAGEMAX8510REGION OF STABLE C OUT ESRvs. LOAD CURRENTM A X 8510 t o c 20LOAD CURRENT (mA)C O U T E S R (Ω)806040200.11101000.01120100STABLE REGIONMAX8510OUTPUT NOISE vs. BP CAPACITANCEM A X 8510 t o c 13BP CAPACITANCE (nF)O U T P U T N O I S E (µV )1051015202501100MAX8510LINE TRANSIENT RESPONSE200µs/divV IN = 3.5V TO 4VV OUT 2mV/divMAX8510SHUTDOWN EXIT DELAY20µs/divV OUT 1V/divSHUTDOWN VOLTAGEV OUT = 3V C BP = 100nFMAX8512Low-Dropout, 120mA Linear RegulatorsTypical Operating Characteristics (continued)Detailed DescriptionThe MAX8510/MAX8511/MAX8512 are ultra-low-noise, low-dropout, low-quiescent current linear regulators designed for space-restricted applications. The parts are available with preset output voltages ranging from 1.5V to 4.5V in 100mV increments. These devices can supply loads up to 120mA. As shown in the Functional Diagram , the MAX8510/MAX8511 consist of an innovative bandgap core and noise bypass circuit, error amplifier, P-channel pass transistor, and internal feedback voltage-divider. The MAX8512 allows for adjustable output with an external feedback network.The 1.225V bandgap reference is connected to the error amplifier’s inverting input. The error amplifier compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the refer-ence voltage, the pass-transistor gate is pulled low. This allows more current to pass to the output and increases the output voltage. If the feedback voltage is too high, the pass transistor gate is pulled high, allowing less cur-rent to pass to the output. The output voltage is fed back through an internal resistor voltage-divider connected to the OUT pin.An external bypass capacitor connected to BP (MAX8510) reduces noise at the output. Additional blocks include a current limiter, thermal sensor, and shutdown logic.Internal P-Channel Pass TransistorThe MAX8510/MAX8511/MAX8512 feature a 1Ω (typ) P-channel MOSFET pass transistor. This provides sev-eral advantages over similar designs using a PNP pass transistor, including longer battery life. The P-channel MOSFET requires no base drive, which considerably reduces quiescent current. PNP-based regulators waste considerable current in dropout when the pass transistor saturates. They also use high base-drive current under heavy loads. The MAX8510/MAX8511/MAX8512 do not suffer from these problems and consume only 40μA of quiescent current in light load and 220μA in dropout (see the Typical Operating Characteristics ).Output Voltage SelectionThe MAX8510/MAX8511 are supplied with factory-set output voltages from 1.5V to 4.5V, in 100mV increments (see Ordering Information ). The MAX8512 features a user-adjustable output through an external feedback net-work (see the Typical Operating Circuits ).To set the output of the MAX8512, use the following equa-tion:OUT REF V R1R2X -1V=where R2 is chosen to be less than 240kΩ and V REF = 1.225V. Use 1% or better resistors.PINNAMEFUNCTIONMAX8510MAX8511MAX8512SC70TDFN -EP SC70TDFN -EP SC70TDFN -EP 151515IN Unregulated Input Supply 232323GNDGround343434SHDN Shutdown. Pull low to disable the regulator.42————BP Noise Bypass for Low-Noise Operation. Connect a 10nF capacitor from BP to OUT. BP is shorted to OUT in shutdown mode.————42FB Adjustable Output Feedback Point575757OUT Regulated Output Voltage. Bypass with a capacitor to GND. See the Capacitor Selection and Regulator Stability section for more details.—1, 6, 841, 2, 6,—1, 6, 8N.C.No connection. Not internally connected.——————EPExposed Pad (TDFN Only). Internally connected to GND. Connect to a large ground plane to maximize thermal performance. Not intended as an electrical connection point.MAX8512Low-Dropout, 120mA Linear RegulatorsPin DescriptionShutdownThe MAX8510/MAX8511/MAX8512 feature a low-power shutdown mode that reduces quiescent current less than 1μA. Driving SHDN low disables the voltage reference, error amplifier, gate-drive circuitry, and pass transistor (see the Functional Diagram), and the device output enters a high-impedance state. Connect SHDN to IN for normal operation.Current LimitThe MAX8510/MAX8511/MAX8512 include a current lim-iter, which monitors and controls the pass transistor’s gate voltage, limiting the output current to 200mA. For design purposes, consider the current limit to be 130mA (min) to 300mA (max). The output can be shorted to ground for an indefinite amount of time without damaging the part. Thermal-Overload ProtectionThermal-overload protection limits total power dissipation in the MAX8510/MAX8511/MAX8512. When the junction temperature exceeds T J = +160°C, the thermal sensor signals the shutdown logic, turning off the pass transis-tor and allowing the IC to cool down. The thermal sensor turns the pass transistor on again after the IC’s junction temperature drops by 10°C, resulting in a pulsed output during continuous thermal-overload conditions.Thermal-overload protection is designed to protect the MAX8510/MAX8511/MAX8512 in the event of a fault con-dition. For continual operation, do not exceed the abso-lute maximum junction temperature rating of T J = +150°C. Operating Region and Power DissipationThe MAX8510/MAX8511/MAX8512 maximum power dis-sipation depends on the thermal resistance of the case and circuit board, the temperature difference between the die junction and ambient, and the rate of airflow. The power dissipation across the device is:P = I OUT (V IN - V OUT)The maximum power dissipation is:P MAX = (T J - T A) / (θJC + θCA)where T J - T A is the temperature difference between the MAX8510/MAX8511/MAX8512 die junction and the sur-rounding air, θJC is the thermal resistance of the package, and θCA is the thermal resistance through the PC board, copper traces, and other materials to the surrounding air. The GND pin of the MAX8510/MAX8511/MAX8512 per-forms the dual function of providing an electrical connec-tion to ground and channeling heat away. Connect the GND pin to ground using a large pad or ground plane.Noise ReductionFor the MAX8510, an external 0.01μF bypass capaci-tor between BP and OUT with innovative noise bypass scheme reduces output noises dramatically, exhibiting 11μV RMS of output voltage noise with C BP = 0.01μF and C OUT = 1μF. Startup time is minimized by a poweron cir-cuit that precharges the bypass capacitor. Applications InformationCapacitor Selectionand Regulator StabilityUse a 1μF capacitor on the MAX8510/MAX8511/MAX8512 input and a 1μF capacitor on the output. Larger input capacitor values and lower ESRs provide better noise rejection and line-transient response. Reduce output noise and improve load-transient response, stability, and power-supply rejection by using large output capacitors. Note that some ceramic dielectrics exhibit large capaci-tance and ESR variation with temperature. With dielec-trics such as Z5U and Y5V, it may be necessary to use a 2.2μF or larger output capacitor to ensure stability at temperatures below -10°C. With X7R or X5R dielectrics, 1μF is sufficient at all operating temperatures. A graph of the region of stable C OUT ESR vs. load current is shown in the Typical Operating Characteristics.Use a 0.01μF bypass capacitor at BP (MAX8510) for low-output voltage noise. The leakage current going into the BP pin should be less than 10nA. Increasing the capaci-tance slightly decreases the output noise. Values above 0.1μF and below 0.001μF are not recommended. Noise, PSRR, and Transient ResponseThe MAX8510/MAX8511/MAX8512 are designed to deliv-er ultra-low noise and high PSRR, as well as low dropout and low quiescent currents in battery-powered systems. The MAX8510 power-supply rejection is 78dB at 1kHz and 54dB at 100kHz. The MAX8511/MAX8512 PSRR is 72dB at 1kHz and 46dB at 100kHz (see the Power-Supply Rejection Ratio vs. Frequency graph in the Typical Operating Characteristics).When operating from sources other than batteries, improved supply-noise rejection and transient response can be achieved by increasing the values of the input and output bypass capacitors, and through passive filter-ing techniques. The Typical Operating Characteristics show the MAX8510/MAX8511/MAX8512 line- and load-transient responses.MAX8512Low-Dropout, 120mA Linear RegulatorsDropout VoltageA regulator’s minimum dropout voltage determines the lowest usable supply voltage. In battery-powered sys-tems, this determines the useful end-of-life battery volt-age. Because the MAX8510/MAX8511/MAX8512 use aP-channel MOSFET pass transistor, their dropout voltage is a function of drain-to-source on-resistance (RDS(ON)) multiplied by the load current (see the Typical Operating Characteristics ).MAX8512Low-Dropout, 120mA Linear RegulatorsFunctional Diagram*xy is the output voltage code (see Output Voltage Selector Guide). Other versions between 1.5V and 4.5V are available in 100mV increments. Contact factory for other versions.**EP = Exposed pad.+Denotes a lead(Pb)-free/RoHS-compliant package.T = Tape and reel.(Note: Standard output voltage options, shown in bold , are available. Contact the factory for other output voltages between 1.5V and 4.5V. Minimum order quantity is 15,000 units.)PART*TEMP RANGE PIN-PACKAGE MAX8510MXK33/PR3+-55°C to +110°C 5 SC70MAX8510ETAxy+T -40°C to +85°C 8 TDFN-EP** 2mm x 2mm MAX8511EXKxy+T -40°C to +85°C 5 SC70MAX8511ETAxy+T -40°C to +85°C 8 TDFN-EP** 2mm x 2mm MAX8512EXK+T -40°C to +85°C 5 SC70MAX8512ETA+T-40°C to +85°C8 TDFN-EP** 2mm x 2mmPARTV OUT (V)TOP MARKMAX8510EXK16+T 1.6AEX MAX8510EXK18+T 1.8AEA MAX8510ETA25+T 2.5AAO MAX8510EXK27+T 2.7ATD MAX8510ETA28+T 2.8AAR MAX8510EXK29+T 2.85ADS MAX8510MXK33/PR3+ 3.3AUV MAX8510ETA30+T 3AAS MAX8510ETA33+T 3.3AAT MAX8510ETA45+T 4.5AAU MAX8510MXK33/PR3+ 3.3AUV MAX8511EXK15+T 1.5ADU MAX8511ETA18+T 1.8AAV MAX8511ETA25+T 2.5AAP MAX8511ETA26+T 2.6AAW MAX8511EXK28+T 2.8AFA MAX8511ETA29+T 2.85AAX MAX8511EXK89+T 2.9AEH MAX8511EXK31+T 3.1ARS MAX8511ETA33+T 3.3AAY MAX8511EXK45+T4.5AEJ MAX8512ETA+TAdjustableAAQPACKAGE TYPE PACKAGE CODE OUTLINE ND PATTERN NO.8 TDFN T822+121-016890-00645 SC70X5+121-007690-0188MAX8512Low-Dropout, 120mA Linear RegulatorsTypical Operating Circuits (continued)Ordering Information (continued)Output Voltage Selector GuidePackage InformationFor the latest package outline information and land patterns (footprints), go to /packages . Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.Chip InformationPROCESS: BiCMOSREVISION NUMBERREVISION DATE DESCRIPTIONPAGES CHANGED 48/11Corrected errors and added lead-free packages 1, 2, 3, 6, 955/19Updated Output Voltage Selector Guide9Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.MAX8512Low-Dropout, 120mA Linear RegulatorsRevision HistoryFor pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https:///en/storefront/storefront.html.。

Instruction ManualDigital Flow Switch – IO-Link compatible PF3W7##-L seriesThe intended use of the digital flow switch is to monitor and display flow information while connected to the IO-Link communication protocol.These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.”They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC) *1), and other safety regulations. *1)ISO 4414: Pneumatic fluid power - General rules relating to systems. ISO 4413: Hydraulic fluid power - General rules relating to systems.IEC 60204-1: Safety of machinery - Electrical equipment of machines. (Part 1: General requirements)ISO 10218-1: Manipulating industrial robots -Safety. etc.• Refer to product catalogue, Operation Manual and Handling Precautions for SMC Products for additional information. • Keep this manual in a safe place for future reference.• This product is class A equipment intended for use in an industrial environment. There may be potential difficulties in ensuring electromagnetic compatibility in other environments due to conducted or radiated disturbances.Caution Caution indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.WarningWarning indicates a hazard with a medium level of riskwhich, if not avoided, could result in death or serious injury.DangerDanger indicates a hazard with a high level of risk which, ifnot avoided, will result in death or serious injury.Warning• Always ensure compliance with relevant safety laws and standards.• All work must be carried out in a safe manner by a qualified person in compliance with applicable national regulations.• Do not disassemble, modify (including changing the printed circuit board) or repair. An injury or failure can result.• Do not operate the product outside of the specifications. Fire, malfunction or damage to the product can result. • Do not use with flammable or highly permeable fluids. Fire, explosion, damage or corrosion can result. • If using the product in an interlocking circuit:Provide a double interlocking system, for example a mechanical system.• Check the product for correct operation.Otherwise malfunction can result, causing an accident.• Do not touch the terminals and connectors while the power is on. Otherwise electric shock, malfunction or product damage can result. • Do not touch the piping or its connected parts when the fluid is at high temperature.Ensure the piping has cooled sufficiently before touching to avoid burns.• Refer to the operation manual on the SMC website (URL: https:// ) for more safety instructions.2 Specifications2.1 IO-Link specificationsC o m m u n i c a t i o n s p e c . (D u r i n g I O -L i n k m o d e )IO-Link type Device IO-Link versionV1.1Communication speed COM2 (38.4 kbps) Min. cycle time 3.5 msProcess data length Input Data: 6 bytes, Output Data: 0 byte On request data communication Available Data storage function Available Event function Available Vendor ID 131 (0x0083)Device IDRefer to direct parameters• Refer to the operation manual on the SMC website (URL: https:// ) for more specification details.3.1 PF3W7##-L (with flow adjustment valve)ElementDescriptionConnector Connector for electrical connections.Lead wire with M8 connector Lead wire to supply power and transmit output signals.Piping port Port to connect the fluid inlet at IN and fluid outlet at OUT.Bracket Bracket for mounting the product. Temperature sensorSensor for detecting the fluid temperature. Flow adjustment valveRestricting valve to adjust the flow rate. Flow adjustment knob Knob for adjusting the flow rate.Lock ring Ring for locking the flow adjustment valve. DisplayDisplays the flow, settings and error codes (See below).Element DescriptionMain screen (2-colour display) Displays the flow, the status of setting mode and error code.Sub screen Displays the accumulated flow, set value, peak/bottom value, fluid temperature and line names.Output display (Indicator LED) Displays the output status of OUT1 and OUT2. When ON: Orange LED is ON. Unit display Displays the unit selected.UP button Selects a mode and the display shown at the sub screen, and increases the ON/OFF set values. SET button Press this button to select mode and to confirm a set value.DOWN button Selects a mode and the display shown at the sub screen, and decreases the ON/OFF set values. IO-Link status indicator lightLED is ON when OUT1 is used in IO-Link mode. (LED is OFF in SIO mode)• Refer to the operation manual on the SMC website (URL: https:// ) for more details of IO-Link indicator light operation and display.ORIGINAL INSTRUCTIONSRefer to Declaration of Conformity for relevant DirectivesModel PF3W704PF3W 720PF3W 740PF3W 711PF3W 721Applicable fluid Water and ethylene glycol solution with aviscosity of 3 mPa•s (3 cP) or lessDetection method Karman vortexRated flow range 0.5 to 4 L/min 2 to 16 L/min 5 to 40 L/min 10 to 100 L/min50 to 250 L/minDisplay flow range 0.35 to 5.50 L/min 1.7 to 22.0 L/min 3.5 to 55.0 L/min 7 to 140 L/min 20 to 350 L/min Switch point range 0.35 to 5.50 L/min 1.7 to 22.0 L/min3.5 to 55.0 L/min7 to 140 L/min 20 to 350 L/minMin. setting unit 0.01 L/min 0.1 L/min1 L/minConversion of accumulated pulse(Pulse width = 50 ms) 0.05 L/pulse0.1 L/pulse 0.5 L/pulse1 L/pulseFluid temperature 0 to 90 o C (No freezing andcondensation)0 to 70 oC (No freezin g and conden sation)Display unit L/min for real-time flow and L for accumulatedflowAccuracy ±3%F.S. Repeatability ±2%F.S.Temperature characteristics ±5%F.S. max. (25 o C reference)Operatingpressure range Refer to graph of operating pressure and proofpressureProof pressure Pressure loss Refer to graph of pressure lossAccumulated flow range 999,999,999.9 L9,999,999,999 LBy 0.1 LBy 1 LSwitch output Select from NPN or PNP open collector outputMax. load current 80 mAMax. applied voltage 30 V (during NPN output) Internal voltage drop 1.5 V or less (Load current 80 mA) Delay time 3.5 ms or lessVariable at 0 to 60 s / 0.01 stepH y s t e r e s i s Hystere sis mode Variable from 0Windo w compar ator mode Output protection Short circuit protectionO u t p u t m o d e FlowSelects one of output (hysteresis or window comparator mode), output for the accumulated flow, the accumulated pulse output, error outputand switch OFF. Temp. Selects the output for fluid temperature (hysteresis mode or window comparator mode).Model PF3W 704PF3W 720PF3W 740PF3W 711PF3W 721Display method 2-screen display (main screen, sub screen) Main screen: 4-digit, 7-segment, 2-colour;red/greenSub screen: 9-digit, 11-segment (5th digit is 7-segment only), White Display update frequency 5 times/sec.Indicator light Output 1 and 2: OrangeS u p p l y v o l t a g e Used as switch output device 12 to 24 VDC, including ripple (p-p) 10%Used as IO-Link device 18 to 30 VDC, including ripple (p-p) 10%Currentconsumption 50 mA max.Digital filter Select from 0.5 s/1.0 s/2.0 s/5.0 s/10.0 s/15.0s/20.0 s/30.0 sE n v i r o n m e n tEnclosure IP65Operating temp. range 0 to 50 oC (No freezing and condensation) Operating humidity range Operation, Storage: 35 to 85%R.H. (Nocondensation) Withstand voltage 1000 VAC, for 1 minute betweenterminals and housing Insulation resistance 50 M Ω min. (with 500 VDC) betweenterminals and housing Standards and regulations CE marked (EMC directive, RoHS directive)Material of fluidcontact parts PPS, SUS304, FKM, SCS13 PPS, SUS304FKM Grease free Piping port size 3/8 3/8, 1/2 1/2, 3/4 3/4、1 11/4、11/24.1 InstallationWarning•Do not install the product unless the safety instructions have been read and understood.•Use the product within the specified operating pressure andtemperature range.•Proof pressure could vary according to the fluid temperature. Check the characteristics data for operating pressure and proof pressure. 4.2 EnvironmentWarning•Do not use in an environment where corrosive gases, chemicals, salt water or steam are present.•Do not use in an explosive atmosphere.•Do not expose to direct sunlight. Use a suitable protective cover. •Do not install in a location subject to vibration or impact in excess of the product’s specifications.•Do not mount in a location exposed to radiant heat that would result in temperatures in excess of the product’s specifications.4.3 Mounting•Never mount the product in a location where it will be used as a support.•Mount the product so that the fluid flows in the direction indicated by the arrow on the side of the body.•Check the flow characteristics data for pressure loss and the straight inlet pipe length effect on accuracy, to determine inlet piping requirements.•Do not sharply reduce the piping size.•The monitor with integrated display can be rotated. It can be set at 90o intervals clock and anticlockwise, and also at 45o and 225o clockwise.Rotating the display with excessive force will damage the end stop.Bracket mounting (PF3W704 / 720 / 740)Mount the product (with bracket) using themounting screws supplied (M4 x 4 pcs).For models with flow adjustment valveattached, fix using 8 mounting screws.Bracket thickness is approx. 1.5 mm.Bracket mounting (PF3W711)Mount the product (with bracket) using themounting screws supplied(M5 x 4 pcs).Bracket thickness is approx. 2 mm.Direct mounting (PF3W704 / 720 / 740)Mount using self tapping screws(nominal size: 3.0 x 4 pcs).For models with flow adjustmentvalve attached, mount using 8 selftapping screws. Tightening torquemust be 0.5 to 0.7 Nm.Direct mounting (PF3W711)Mount using self tapping screws(nominal size: 4.0 x 4 pcs).Tightening torque must be 1.0 to 1.2Nm.Self tapping screws should not be re-used.Refer to the operation manual on the SMC website (URL: https://) for mounting hole details and outline dimensions. 4.4 PipingCaution•Before connecting piping make sure to clean up chips, cutting oil, dustetc.•When installing piping or fittings, ensure sealant material does notenter inside the port.•Ensure there is no leakage after piping.•When connecting piping to the product, a spanner should be used onthe metal piping attachment only.Using a spanner on other parts may damage the product.In particular, do not let the spanner come into contact with the M8connector. The connector can be easily damaged.Width across flats of attachment3/8 20.9 mm1/2 23.9 mm3/4 29.9 mm1 41 mmAfter hand tightening, apply a spanner of the correct size to thespanner flats on the product, and tighten it for 2 to 3 rotations, to thetightening torque shown in the table below.Nominal thread size Tightening torqueRc(NPT)3/8 15 to 20 NmRc(NPT)1/2 20 to 25 NmRc(NPT)3/4 28 to 30 NmRc(NPT)1 36 to 38 NmRc(NPT)1 1/4 40 to 42 NmRc(NPT)1 1/2 48 to 50 NmIf the tightening torque is exceeded, the product can be damaged. Ifthe correct tightening torque is not applied, the fittings may becomeloose.4.5 WiringCaution•Do not perform wiring while the power is on.•Confirm proper insulation of wiring.•Do not route wires and cables together with power or high voltagecables.Otherwise the product can malfunction due to interference of noise andsurge voltage from power and high voltage cables to the signal line.Route the wires (piping) of the product separately from power or highvoltage cables.•Keep wiring as short as possible to prevent interference fromelectromagnetic noise and surge voltage.Do not use a cable longer than 20 m.•Ensure that the FG terminal is connected to ground when using acommercially available switch-mode power supply.When used as switch output deviceNo. NameWirecolourFunction1 DC(+) Brown 12 to 24 VDC2N.C./OUT2WhiteNot connected /Switch output 2 (SIO)3 DC(-) Blue 0 V4 OUT1 Black Switch output 1When used as IO-Link deviceNo. NameWirecolourFunction1 L+ Brown 18 to 30 VDC2N.C./OUT2WhiteNot connected /Switch output 2 (SIO)3 L-Blue 0 V4 C/Q BlackIO-Link data /Switch output 1 (SIO)∗: Wire colours are for lead wire included with the PF3W7 series.5.1 Measurement modeThe mode in which the flow is detected and displayed, and the switchfunction is operating.This is the basic operating mode; other modes should be selected for set-point and other function setting changes.5.2 Switch operationWhen the flow exceeds the set value, the switch will be turned ON.When the flow falls below the set value by the amount of hysteresis ormore, the switch will be turned OFF.If the operation shown below is acceptable, keep this setting.5.3 3-step setting mode1. Press the SET button in measurement mode to display set values.(The item to be changed is displayed on the sub display)Set value on the right side of the sub screen flashes.2. Press the UP or DOWN button to change the set value.The UP button is to increase and the DOWN button is to decrease.•Press the UP button once to increase by one digit, or press and holdto continuously increase.•Press the DOWN button once to decrease by one digit, or press andhold to continuously decrease.3. Press the SET button to finish the setting.•For setting of hysteresis, perform the settings referring to [F 1] Settingof OUT1.•Note that the set value and hysteresis are limited by each other.•For more detailed settings, set each function in Function selectionmode.6.1 Function selection modeIn measurement mode, press the SET button for 3 to 5 seconds to display[F ] on the main screen.Select to display the function to be change [F ].Press and hold the SET button for 2 seconds or longer in functionselection mode to return to measurement mode.The function number is increased and decreased by the UP and DOWNbuttons. Display the required function number and press the SET button.6.2 Sub screen displayIn measurement mode, the sub screen display can be temporarilychanged by pressing the UP or DOWN buttons.After 30 seconds, it will automatically reset to the display selected in[F10].Example shown is for the 16 L/min type.6.3 Default settingsItem Default setting[F 0][Unit] Display units [ L] L/min, o C[N orP] Switch outputNPN/PNP[PnP] PNP output[F 1][oUt1] Output mode(OUT1)[HYS] Hysteresis mode[1ot] Switch operation(OUT1)[1_P] Normal output[P_1] Set value (OUT1) 50% of maximum rated flow[H_1] Hysteresis (OUT1) 5% of maximum rated flow[dtH1] Delay time at ON [0.00] 0.00 s[dtL1] Delay time at OFF [0.00] 0.00 s[CoL] Display colour(OUT1)[1SoG] ON: GreenOFF: Red (OUT1)[F 2]Notemp.sensor[oUt2] Output mode(OUT2)[HYS] Hysteresis mode[2ot] Switch operation(OUT2)[2_P] Normal output[P_2] Set value (OUT2) 50% of maximum rated flow[H_2] Hysteresis (OUT2) 5% of maximum rated flow[dtH2] Delay time at ON [0.00] 0.00 s[dtL2] Delay time at OFF [0.00] 0.00 s[CoL] Display colour(OUT2)[1SoG] ON: GreenOFF: Red (OUT2)[F 2]Withtemp.sensor[oUt2] Output mode(OUT2)[tHYS] TemperatureHysteresis[2ot] Switch operation(OUT2)[2_n] Reverse output[tn_2] Set value (OUT2) 50% of maximum rated temp.[ t H_2] Hysteresis (OUT2) 0% of maximum rated temp.[dtH2] Delay time at ON [0.00] 0.00 s[dtL2] Delay time at OFF [0.00] 0.00 s[CoL] Display colour(OUT2)[1SoG] ON: GreenOFF: Red (OUT2)ItemDefault setting[F 3][ FiL] Digital filter setting[ 1.0] 1.0 s[F10][ SUb] Sub screendisplay setting[ dEF] Standard (OUT1 setvalue displayed)∗: When a temperature sensor is not connected. [ dEF] Standard (fluidtemp. displayed)∗: When a temperature sensor is connected. [F30] [ SAvE] Accumulated flowvalue storage[ oFF] Not saved [F80] [ diSP] Display OFFmode[ on] Normal display [F81] [ Pin] Security codesetting[ oFF] OFF [F90] [ ALL] Setting of allfunctions[ oFF] OFF[F98] [ tESt] OUT1 output testmode[ n] Normal output [F99] [ ini] Reset to thedefault settings[ oFF]OFF• Snap shot function • Key-lock functionRefer to the operation manual on the SMC website (URL: https:// ) for setting these functions. 9.1 General MaintenanceCaution• Not following proper maintenance procedures could cause the product to malfunction and lead to equipment damage.• If handled improperly, compressed air can be dangerous.• Maintenance of pneumatic systems should be performed only by qualified personnel.• Before performing maintenance, turn off the power supply and be sure to cut off the supply pressure. Confirm that the air is released to atmosphere.• After installation and maintenance, apply operating pressure and power to the equipment and perform appropriate functional and leakage tests to make sure the equipment is installed correctly.• If any electrical connections are disturbed during maintenance, ensure they are reconnected correctly and safety checks are carried out as required to ensure continued compliance with applicable national regulations.• Do not make any modification to the product.• Do not disassemble the product, unless required by installation or maintenance instructions.• How to reset the product after a power cut or when the power has been unexpectedly removedThe settings of the product are retained from before the power cut or de-energizing.The output condition also recovers to that before the power cut or de-energizing, but may change depending on the operating environment. Therefore, check the safety of the whole system before operating the product.10.1 Error indicationIf the error cannot be reset after the above measures are taken, or errors other than the above are displayed, please contact SMC.Refer to the operation manual on the SMC website (URL: https:// ) for more detailed information about troubleshooting.11 How to OrderRefer to drawings/catalogue for ‘How to Order’.12 Outline Dimensions (mm)Refer to drawings/catalogue for outline dimensions.13 Limitations of Use8.1 Limited warranty and Disclaimer/Compliance Requirements Refer to Handling Precautions for SMC Products.14 ContactsRefer to Declaration of Conformity and URL: https:// for contacts.URL : https:// (Global) https:// (Europe) 'SMC Corporation, Akihabara UDX15F, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101 0021Specifications are subject to change without prior notice from the manufacturer. © 2019 SMC Corporation All Rights Reserved. Template DKP50047-F-085H。