PCF8574/74A: 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。
PCF8574_74A: 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 (2)
| 名称/描述 | Modified Date |
|---|---|
| plastic small outline package; 16 leads; body width 7.5 mm (REV 1.0) PDF (317.0 kB) SOT162-1 [English] | 08 Feb 2016 |
| 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 (3)
| 名称/描述 | Modified Date |
|---|---|
| SO16; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or... (REV 1.0) PDF (271.0 kB) SOT162-1_518 [English] | 25 Nov 2014 |
| 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 |
| SO16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 1.0) PDF (229.0 kB) SOT162-1_118 [English] | 12 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 (3)
| 名称/描述 | Modified Date |
|---|---|
| Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English] | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English] | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English] | 08 Oct 2009 |
IBIS
- PCF8574AT IBIS Model (REV 1.0) ibs PCF8574AT 2/28/2013
- PCF8574T IBIS Model (REV 1.0) ibs PCF8574T 2/28/2013
订购信息
| 型号 | 状态 |
|---|---|
| PCF8574AT | No Longer Manufactured |
| PCF8574T | No Longer Manufactured |
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 | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCF8574AT/3 |  | SOT162-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Tube in Drypack | Active | PCF8574AT/3,512 (9352 755 81512) | PCF8574AT | PCF8574AT/3 |    | week 35, 2004 | 2 | 2 |
| Reel 13" Q1/T1 in Drypack | Active | PCF8574AT/3,518 (9352 755 81518) | PCF8574AT | PCF8574AT/3 | | week 35, 2004 | 2 | 2 | ||||
| PCF8574TS/3 | | SOT266-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCF8574TS/3,118 (9352 756 72118) | 8574TS | PCF8574TS/3 | | Always Pb-free | 1 | 1 |
| Bulk Pack | Active | PCF8574TS/3,112 (9352 756 72112) | 8574TS | PCF8574TS/3 | | Always Pb-free | 1 | 1 | ||||
| PCF8574ATS/3 | | SOT266-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCF8574ATS/3,118 (9352 765 44118) | 8574A | PCF8574ATS/3 | | Always Pb-free | 1 | 1 |
| PCF8574T/3 | | SOT162-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Tube in Drypack | Active | PCF8574T/3,512 (9352 756 17512) | PCF8574T | PCF8574T/3 | | Always Pb-free | 1 | 2 |
| Reel 13" Q1/T1 in Drypack | Active | PCF8574T/3,518 (9352 756 17518) | PCF8574T | PCF8574T/3 | | Always Pb-free | 1 | 2 |
- 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
- SO16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... TJA1052IT
- design_con_2003_tecforum_i2c_b_1 lm75a
- PCF8574AT IBIS Model PCF8574AT
- PCF8574T IBIS Model PCF8574T
- 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
- plastic small outline package; 16 leads; body width 7.5 mm TJF1052IT
- Footprint for reflow soldering NPIC6C596A_Q100
- Footprint for wave soldering NPIC6C596A_Q100
- SO16; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or... TJF1052IT
- PCF8574_74A
- SA636
- TJF1052IT
