PCA9646: 经过缓冲的4通道2线总线开关
PCA9646是一款单片CMOS集成电路，适用于I²C总线、SMBus、PMBus及其他基于类似原理的系统应用中的2线总线缓冲和切换。
可按任何组合独立启用各四个输出，由可编程控制寄存器的内容决定。每个I/O的阻抗均与所有其他I/O隔离，因此允许总共五个带有最大指定负载的2线总线分支（例如，1 MHz时的Fm+ I²C总线为5 × 400 pF，或在更低频率时为5 × 4 nF）（参考1）。可串联使用多个PCA9646，提供强大的扇出能力。
类似PCA9525和PCA9605简易总线缓冲器，PCA9646附带用于时钟信号的单向缓冲器和用于数据信号的双向缓冲器。可通过可编程控制寄存器的内容设置时钟信号的方向。时钟展宽和定时必须始终由主器件控制。
PCA9646极其适合2线总线地址扩展和增加最大负载电容。超大型LED显示是完美的示例。
PCA9646: 产品结构框图
Outline 3d SOT403-1
数据手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| Buffered 4-channel 2-wire bus switch (REV 2.0) PDF (162.0 kB) PCA9646 [English] | 17 Jun 2015 |
应用说明 (3)
| 名称/描述 | Modified Date |
|---|---|
| Very large I2C-bus systems and long buses (REV 1.0) PDF (216.0 kB) AN11084 [English] | 26 Oct 2011 |
| Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 [English] | 20 Jun 2007 |
| PCA954X FAMILY OF I²C / SMBus MULTIPLEXERS and SWITCHES (REV 2.0) PDF (807.0 kB) AN262 [English] | 01 Oct 2004 |
用户指南 (3)
| 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 |
| I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 [English] | 13 Jun 2006 |
手册 (2)
| 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 |
| Add design fl exibility with multi-channel I2C/SMBus muxes and switches; NXP® 2-, 4-, and 8-channel... (REV 1.0) PDF (641.0 kB) 75016529 [English] | 01 Jul 2008 |
封装信息 (1)
| 名称/描述 | Modified Date |
|---|---|
| plastic thin shrink small outline package; 16 leads; body width 4.4 mm (REV 1.0) PDF (300.0 kB) SOT403-1 [English] | 08 Feb 2016 |
包装 (1)
| 名称/描述 | Modified Date |
|---|---|
| TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (218.0 kB) SOT403-1_118 [English] | 08 Apr 2013 |
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 |
IBIS
- PCA9646PW IBIS Model (REV 1.0) ibs PCA9646PW 2/14/2013
订购信息
| 型号 | 状态 |
|---|---|
| PCA9646PW | Active |
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 | EFR | IFR(FIT) | MTBF（小时） | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9646PW | | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCA9646PW,118 (9352 927 49118) | PCA9646 | PCA9646PW |    | Always Pb-free | 0.0 | 5.0 | 2E8 | 1 | 1 |
- Buffered 4-channel 2-wire bus switch pca9646d
- Very large I2C-bus systems and long buses pca9601
- Level shifting techniques in I2C-bus design pca9685pw
- PCA954X FAMILY OF I²C / SMBus MULTIPLEXERS and SWITCHES pca9516apw
- I2C-bus specification and user manual pca9685pw
- I2C-bus specification and user manual pca9685pw
- 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
- Add design fl exibility with multi-channel I2C/SMBus muxes and switches; NXP® 2-, 4-, and 8-channel... pca9548a
- PCA9646PW IBIS Model PCA9646PW
- SOT403-1 LPC812M101JDH16
- SSOP-TSSOP-VSO-WAVE LPC1114FDH28
- Reel 13" Q1/T1 LPC812M101JDH16
- PCA9646
- PCA9633
