PCF8574TS: I2C总线远程8位I/O扩展器

PCF8574是一款硅CMOS电路。通过两路双向总线(I²C总线)为大多数微控制器系列提供通用远程I/O扩展。

器件由8位准双向端口和I²C总线接口组成。PCF8574具有低电流消耗且包含具备高电流驱动能力的锁存输出,用于直接驱动LED。还具有中断线路(INT),可连接至微控制器的中断逻辑。通过在此线路发送中断信号,远程I/O可通知微控制器其端口上是否存在输入数据而无需通过I²C总线通信。这表示PCF8574依然是简单的从器件。

PCF8574和PCF8574A版本的不同之处仅在于它们的从地址,如图10所示。

PCF8574TS: 产品结构框图
Outline 3d SOT266-1
数据手册 (1)
名称/描述Modified Date
Remote 8-bit I/O expander for I2C-bus with interrupt (REV 5.0) PDF (795.0 kB) PCF8574_PCF8574A [English]27 May 2013
应用说明 (7)
名称/描述Modified Date
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus (REV 1.0) PDF (90.0 kB) AN256 [English]23 Mar 2009
Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 [English]20 Jun 2007
UART/SPI/I2C code examples (REV 1.0) PDF (259.0 kB) AN10369 [English]12 Apr 2005
I2C/SMBus general purpose I/O expanders (REV 2.0) PDF (294.0 kB) AN469 [English]20 Jan 2005
I2C manual (REV 1.0) PDF (4.2 MB) AN10216 [English]27 Mar 2003
High-end RDS/EON car radio system CCR612 user manual (REV 1.0) PDF (384.0 kB) AN96029 [English]14 Mar 2003
P83CE258 for High-End RDS/EON Car Radio System CCR520S V2.5 (REV 1.0) PDF (108.0 kB) AN96007 [English]01 Feb 1996
用户指南 (4)
名称/描述Modified Date
I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 [English]28 Apr 2014
I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA [English]03 Apr 2013
PCA9698 demonstration board OM6281 (REV 1.0) PDF (558.0 kB) UM10267 [English]26 Sep 2008
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 [English]13 Jun 2006
手册 (5)
名称/描述Modified Date
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 [English]01 Aug 2014
Versatile, easy-to-use GPIO expanders; NXP® 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 (REV 1.0) PDF (319.0 kB) 75016535 [English]01 Aug 2008
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... (REV 1.0) PDF (1.1 MB) 75016543 [English]01 Jun 2008
Combination GPIO expanders and EEPROMs for smaller boards; NXP® 8-bit I2C/SMBus GPIO expanders with 2-K... (REV 1.0) PDF (227.0 kB) 75016018 [English]01 Jun 2007
Low-power GPIO expanders for portable applications; NXP® 8/16-bit I2C/SMBus GPIO expanders... (REV 1.0) PDF (239.0 kB) 75016020 [English]01 Jun 2007
封装信息 (1)
名称/描述Modified Date
plastic shrink small outline package; 20 leads; body width 4.4 mm (REV 1.0) PDF (329.0 kB) SOT266-1 [English]08 Feb 2016
包装 (1)
名称/描述Modified Date
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (222.0 kB) SOT266-1_118 [English]15 Apr 2013
报告或演示文稿 (1)
名称/描述Modified Date
design_con_2003_tecforum_i2c_b_1 (REV 0.1) PDF (4.2 MB) DESIGN_CON_2003_TECFORUM_I2C_B_1 [English]27 Jan 2003
支持信息 (1)
名称/描述Modified Date
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English]08 Oct 2009
订购信息
型号状态No of bitsVDD [min] (V)VDD [max] (V)Over volt tolerantNo of suppliesStandby current [typ] (µA)Max Sink Current per bit (mA)Max Sink Current, per package (mA)Source Current per bit (mA)Interrupt output pinReset input pinOutput modeInput mode: invert optionInternal pull-up resistor per bit (kOhm)I2C-bus (kHz)Footprint body and leads (mm2)Package namePackage versionOperating Temperature (Cel)No of AddressesRemark
PCF8574TS/3Active82.5612.525800.1YQuasiInt I source10043.56SSOP20SOT266-1-40~858
PCF8574TS/F3No Longer Manufactured82.5612.525800.1YQuasiInt I source10043.56SSOP20SOT266-1-40~858
封装环保信息
产品编号封装说明Outline Version回流/波峰焊接包装产品状态部件编号订购码 (12NC)Marking化学成分RoHS / 无铅 / RHF无铅转换日期MSLMSL LF
PCF8574TS/3SOT266-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActivePCF8574TS/3,118 (9352 756 72118)8574TSPCF8574TS/3Always Pb-free11
Bulk PackActivePCF8574TS/3,112 (9352 756 72112)8574TSPCF8574TS/3Always Pb-free11
Remote 8-bit I/O expander for I2C-bus with interrupt pcf8574_74a
PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus PCA9553
Level shifting techniques in I2C-bus design pca9685pw
UART/SPI/I2C code examples LPC2294HBD144
I2C/SMBus general purpose I/O expanders pcf8575ts
I2C manual se98apw
High-end RDS/EON car radio system CCR612 user manual TDA8579T
P83CE258 for High-End RDS/EON Car Radio System CCR520S V2.5 TDA8579T
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
PCA9698 demonstration board OM6281 PCA9553
I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
Versatile, easy-to-use GPIO expanders; NXP® 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 pcf8570p
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
Combination GPIO expanders and EEPROMs for smaller boards; NXP® 8-bit I2C/SMBus GPIO expanders with 2-K... pcf8582c-2t
Low-power GPIO expanders for portable applications; NXP® 8/16-bit I2C/SMBus GPIO expanders... pcf8570p
design_con_2003_tecforum_i2c_b_1 lm75a
plastic shrink small outline package; 20 leads; body width 4.4 mm SA636
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... SA636
PCF8574_74A
SA636