数据表PCF8575远程16位I 2 C总线I/O扩展器内容简介1．特征2．一般描述3．订货信息4．框图5．引脚6．I 2 C总线的特点6．1．位传输6．2．启停条件6．3．系统配置6．4．应答7．功能描述7．1．双向I/O7．2．寻址7．3．读取端口（输入模式）7．4．写入端口（输出模式）7．5．中断8．极限值9．处理10．特点11．I 2 C总线的时序特性12．设备的保护13．封装外形14．焊接14．1焊接表面贴装封装介绍14．2回流焊接14．3波动焊接14．4手工焊接14．5表面安装IC封装的波动和回流焊接方法的适用性15．定义16．支持应用程序17．购买飞利浦I 2 C组件1．特征工作电源电压2.5至5.5 V最大低待机电流消耗10µI 2 C总线并行端口扩展器快至400 kbits/s的I 2 C总线开漏中断输出16位远程I/O端口的I 2 C总线兼容大多数微控制器具有高电流锁存输出驱动能力可直接驱动LED地址由3个硬件地址引脚使用多达8个设备ssop24包装2．一般描述PCF8575是硅CMOS电路。
它提供了通用的远程I/O扩展对于大多数的微控制器的家庭通过两线双向总线（I 2 C总线）。
该设备有一个双向16位的接口和一个I 2 C总线接口。
PCF8575具有低电流消耗，包括锁存输出与LED直接驱动高电流驱动能力。
它还具有一个中断线（INT），它可以连接到中断逻辑的微控制器。
通过在这条线上发送中断信号，远程I / O可以通知单片机如果有接口输入的数据而不必通过I 2 C总线通信。
这意味着，PCF8575是I 2 C总线从发送器/接收器。
从PCF8575传输每一个数据必须由偶数个字节组成，第一个字节为P07至P00和第二个字节为P17至P10。
第三个为P07至P00等。
3．订货信息型号：PCF8575TS包装：“名称：SSOP24。
”“描述：塑料收缩小外形封装；24引线；机身宽度5.3毫米。
©2002 Fairchild Semiconductor CorporationRev. 1.0.1Features•Output Current in Excess of 3.0A•Output Transistor Safe Operating Area Compensation •Power Dissipation :25W•Internal Short Circuit Current Limiting •Internal Thermal Overload Protection •Output V oltage Offered in 4% Tolerance •No External Components Required •Output V oltage of 5,12 and 15VDescriptionThis family of fixed voltage regulators are monolithicintegrated circuit capable of driving loads in excess of 3.0 A.TO-2201.Input2. GND3. Output1GNDInternal Block DiagramSERIES PASSELEMENTSOAPROTECTIONERROR AMPLIFIERTHERMAL PROTECTIONCURRENT GENERATORREFERENCE VOLTAGE STARTING CIRCUITOUTPUT3GND 2INPUT1MC78TXX3-Terminal 3A Positive Voltage RegulatorMC78TXX2Absolute Maximum RatingsNote:1. Thermal resistance test boardSize: 76.2mm * 114.3mm * 1.6mm(1S0P)JEDEC standard: JESD51-3, JESD51-72. Assume no ambient airflow.Electrical Characteristics(MC78T05)(V I = 10V, I O = 3.0 A, 0°C ≤ T J ≤ +125°C, Po ≤ P MAX (Note3), unless otherwise specified. )Note:3. Although power dissipation is internally limited, specifications apply only for P O ≤ Pmax, Pmax = 25W4. Load and line regulation are specified at constant junction temperature. Change in Vo due heating effects must be taken intoaccount separately. Pulse testing with low duty is used.ParameterSymbol Value Unit Input Voltage (for V O = 5V to 12V)(for V O = 15V)V I 3540V VPower DissipationPD Internally limitedThermal Resistance, Junction to Air (Note1, 2)Ta = +25°CR θJA 65°C/W Thermal Resistance, Junction to Case (Note1)Tc = +25°CR θJC 2.5°C/W Operating Junction Temperature Range T J 0 ~ +125°C Storage Temperature RangeT STG-65 ~ +150°CParameter Symbol ConditionsMin.Typ.Max.Unit Output VoltageVo5mA ≤ Io ≤ 3.0A , T J = +25°C 7.3V ≤ VI ≤ 20V, 5mA ≤ Io ≤ 2.0A 4.84.75 5.05.0 5.25.25VLine Regulation (Note4)∆V O 7.2V ≤ VI ≤ 35V , Io=5mA, T J =+25°C 7.2V ≤ VI ≤ 35V , Io=1.0A, T J = +25°C 7.5V ≤ VI ≤ 20V, Io =2.0A, T J = +25°C 8.0V ≤ VI ≤ 12V, Io =3.0A, T J = +25°C - 3.025mV Load Regulation (Note4)∆V O 5mA ≤ Io ≤ 3.0A , T J = +25°C 5mA ≤ Io ≤ 3.0A -10153080mV mV Thermal Regulation REG T Pulse =10ms, P = 20W T A = +25°C-0.0020.03%Vo/W Quiescent CurrentI Q5mA ≤ Io ≤ 3.0A , T J = +25°C 5mA ≤ Io ≤ 3.0A-3.54.05.06.0mA mA Quiescent Current Change ∆I Q7.2V ≤ VI ≤ 35V, Io = 5mA T J = +25°C ;7.5V ≤ VI ≤ 20V, Io =2.0A ;5mA ≤ Io ≤ 3.0A, T J = +25°C -0.10.8mARipple Rejection RR f = 120Hz, 8V ≤ V I ≤ 18V, I o = 2.0A T J = +25°C -75-dB Dropout Voltage V D Io = 3A ,T J = +25°C- 2.2 2.5V Output Noise Voltage V N T A = +25°C, 10Hz ≤ f ≤ 100kHz -10-µV/Vo Peak Output Current I PK T A = +25°C - 5.0-A Output Resistance Ro f = 1.0kHz- 2.0-m ΩShort Circuit Current LimitIscVI = 35V, T J =+25°C - 1.5 2.5A Average TemperatureCoefficient of Output Voltage∆V O /∆TIo = 5.0mA-0.2-mV/°CMC78TXX3Electrical Characteristics(MC78T12) (Continued)(V I = 19V, I O = 3.0 A, 0°C ≤ T J ≤ +125°C, Po ≤ P MAX (Note1), unless otherwise specified. )Note:1. Although power dissipation is internally limited, specifications apply only for P O ≤ Pmax, Pmax = 25W2. Load and line regulation are specified at constant junction temperature. Change in Vo due heating effects must be taken intoaccount separately. Pulse testing with low duty is used. ( P MAX = 25W)Parameter Symbol ConditionsMin.Typ.Max.Unit Output VoltageVo5mA ≤ Io ≤ 3.0A , T J =+25°C14.5V ≤ VI ≤ 27V, 5mA ≤ Io ≤ 2.0A 11.511.4121212.512.8VLine Regulation (Note2)∆V O 14.5V ≤ VI ≤ 35V, Io=5mA, T J =+25°C 14.5V ≤ VI ≤ 35V, Io=1.0A, T J =+25°C 14.9V ≤ VI ≤ 28V, Io =2.0A, T J =+25°C 16V ≤ VI ≤ 22V, Io =3.0A, T J =+25°C - 6.045mV Load Regulation (Note2)∆V O 5mA ≤ Io ≤ 3.0A, T J =+25°C 5mA ≤ Io ≤ 3.0A -10153080mV mV Thermal Regulation REG T Pulse =10ms, P = 20W TA = +25°C-0.0020.03%Vo/W Quiescent CurrentI Q 5mA ≤ Io ≤ 3.0A, T J =+25°C 5mA ≤ Io ≤ 3.0A-3.54.05.06.0mA mA Quiescent Current Change ∆I Q14.5V ≤ VI ≤ 35V, Io = 5mA T J =+25°C ;14.9V ≤ VI ≤ 27V, Io =2.0A ;5mA ≤ Io ≤ 3.0A, T J =+25°C -0.10.8mARipple Rejection RR f = 120Hz, 15V ≤ V I ≤ 25V, Io = 2.0A T J =+25°C -67-dB Dropout Voltage V D Io = 3A,T J =+25°C- 2.2 2.5V Output Noise Voltage V N T A =+25°C, 10Hz ≤ f ≤ 100kHz -10-µV/Vo Peak Output Current I PK T A =+25°C - 5.0-A Output Resistance Ro f = 1.0kHz- 2.0-m ΩShort Circuit Current LimitIscVI = 35V, T J =+25°C - 1.5 2.5A Average TemperatureCoefficient of Output Voltage∆V O /∆TIo = 5.0mA-0.5-mV/°CMC78TXX4Electrical Characteristics(MC78T15) (Continued)(V I = 23V, I O = 3.0 A, 0°C ≤ T J ≤ +125°C, Po ≤ P MAX (Note1), unless otherwise specified. )Note:1. Although power dissipation is internally limited, specifications apply only for P O ≤ Pmax, Pmax = 25W2. Load and line regulation are specified at constant junction temperature. Change in Vo due heating effects must be taken into account separately. Pulse testing with low duty is used. ( P MAX = 25W)Parameter Symbol ConditionsMin.Typ.Max.Unit Output VoltageVo5mA ≤ Io ≤ 3.0A, T J =+25°C17.5V ≤ VI ≤ 30V, 5mA ≤ Io ≤ 2.0A 14.414.25151515.615.75VLine Regulation (Note2)∆V O 17.6V ≤ VI ≤ 40V, Io=5mA, T J =+25°C 17.6V ≤ VI ≤ 40V, Io=1.0A, T J =+25°C 18V ≤ VI ≤ 30V, Io =2.0A, T J =+25°C 20V ≤ VI ≤ 26V, Io =3.0A, T J =+25°C -7.555mV Load Regulation (Note2)∆V O 5mA ≤ Io ≤ 3.0A, T J =+25°C 5mA ≤ Io ≤ 3.0A -10153080mV mV Thermal Regulation REG T Pulse =10ms, P = 20W TA = +25°C-0.0020.03%Vo/W Quiescent CurrentI Q 5mA ≤ Io ≤ 3.0A, T J =+25°C 5mA ≤ Io ≤ 3.0A-3.54.05.06.0mA mA Quiescent Current Change ∆I Q17.6V ≤ VI ≤ 40V, Io = 5mA T J =+25°C ;18V ≤ VI ≤ 30V, Io =2.0A ;5mA ≤ Io ≤ 3.0A, T J =+25°C-0.10.8mARipple Rejection RR f = 120Hz, 18.5V ≤ V I ≤ 28.5V, Io = 2.0A T J =+25°C-65-dB Dropout Voltage V D Io = 3A ,T J = +25°C- 2.2 2.5V Output Noise Voltage V N T A = +25°C, 10Hz ≤ f ≤ 100kHz -10-µV/Vo Peak Output Current I PK T A = +25°C - 5.0-A Output Resistance Ro f = 1.0kHz- 2.0-m ΩShort Circuit Current LimitIscVI = 40V, T J = +25°C - 1.0 2.0A Average TemperatureCoefficient of Output Voltage∆V O /∆TIo = 5.0mA-0.5-mV/°CMC78TXX Typical ApplicationNote:1.To specify an output voltage, substitute voltage value for “XX”.2.Bypass Capacitors are recommend for optimum stability and transient response and should be located as close as possibleto the regulator5MC78TXXMechanical DimensionsPackageDimensions in millimetersTO-2206MC78TXX7Ordering InformationProduct Number PackageOperating TemperatureMC78T05CT TO-2200 ~ +125°CMC78T12CT MC78T15CTMC78TXX11/12/02 0.0m 001Stock#DSxxxxxxxx2002 Fairchild Semiconductor CorporationLIFE SUPPORT POLICYFAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:1.Life support devices or systems are devices or systemswhich, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can bereasonably expected to result in a significant injury of the user.2. A critical component in any component of a life supportdevice or system whose failure to perform can bereasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.DISCLAIMERFAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANYLIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.。
数据表PCF8575远程16位I 2 C总线I/O扩展器内容简介1．特征2．一般描述3．订货信息4．框图5．引脚6．I 2 C总线的特点6．1．位传输6．2．启停条件6．3．系统配置6．4．应答7．功能描述7．1．双向I/O7．2．寻址7．3．读取端口（输入模式）7．4．写入端口（输出模式）7．5．中断8．极限值9．处理10．特点11．I 2 C总线的时序特性12．设备的保护13．封装外形14．焊接14．1焊接表面贴装封装介绍14．2回流焊接14．3波动焊接14．4手工焊接14．5表面安装IC封装的波动和回流焊接方法的适用性15．定义16．支持应用程序17．购买飞利浦I 2 C组件1．特征工作电源电压2.5至5.5 V最大低待机电流消耗10µI 2 C总线并行端口扩展器快至400 kbits/s的I 2 C总线开漏中断输出16位远程I/O端口的I 2 C总线兼容大多数微控制器具有高电流锁存输出驱动能力可直接驱动LED地址由3个硬件地址引脚使用多达8个设备ssop24包装2．一般描述PCF8575是硅CMOS电路。
它提供了通用的远程I/O 扩展对于大多数的微控制器的家庭通过两线双向总线（I 2 C 总线）。
该设备有一个双向16位的接口和一个I 2 C总线接口。
PCF8575具有低电流消耗，包括锁存输出与LED直接驱动高电流驱动能力。
它还具有一个中断线（INT），它可以连接到中断逻辑的微控制器。
通过在这条线上发送中断信号，远程I / O可以通知单片机如果有接口输入的数据而不必通过I 2 C总线通信。
这意味着，PCF8575是I 2 C总线从发送器/接收器。
从PCF8575传输每一个数据必须由偶数个字节组成，第一个字节为P07至P00和第二个字节为P17至P10。
第三个为P07至P00等。
3．订货信息型号：PCF8575TS包装：“名称：SSOP24。
”“描述：塑料收缩小外形封装；24引线；机身宽度5.3毫米。
