PCA9544ABS: 带有中断逻辑的4通道I2C总线多路复用器
PCA9544A是一款四选一双向变换多路复用器，通过I²C总线进行控制。SCL/SDA上游对会扇出四个SCx/SDx下游对或通道。一次只选择一条SCx/SDx通道，由可编程控制寄存器的内容决定。提供四个中断输入1至1，每对SCx/SDx下游对各一个。提供一个中断输出1，用作四个中断输入的AND。
上电复位功能会将寄存器设为其默认状态并初始化I²C总线状态机而不选择任何通道。
多路复用器的传递门如此构造，使得VDD引脚可用于限制PCA9544A所传递的最高电压。这允许在各SCx/SDx对上使用不同的总线电压，在没有任何额外保护的情况下使1.8 V、2.5 V或3.3 V部件能够与5 V部件通信。外部上拉电阻将总线上拉至各通道想要的电压电平。所有I/O引脚均为5 V耐受。
PCA9544ABS: 产品结构框图
sot662-1_3d
数据手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| 4-channel I2C-bus multiplexer with interrupt logic (REV 5.0) PDF (271.0 kB) PCA9544A [English] | 23 Apr 2014 |
应用说明 (2)
| 名称/描述 | Modified Date |
|---|---|
| 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 thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 x 5 x 0.85 mm (REV 1.0) PDF (209.0 kB) SOT662-1 [English] | 08 Feb 2016 |
包装 (1)
| 名称/描述 | Modified Date |
|---|---|
| HVQFN20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (266.0 kB) SOT662-1_118 [English] | 18 Apr 2013 |
Design Support
- Expert mode sample code PCA9544A (REV 1.0) TXT PCA9544A_1_2 12/10/2014
IBIS
- PCA9544A IBIS model (REV 1.0) ZIP PCA9544A_1 9/2/2014
订购信息
| 型号 | 状态 | Package version | Interrupt | Power-on reset | Operating Temperature (Cel) | Reset input pin | Operating voltage (VDC) | Inputs | Outputs | No of Addresses | I2C-bus (kHz) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9544ABS | Active | SOT662-1 | -40~85 | 2.3~5.5 | 1 | 4 | 8 | 400 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9544ABS | | SOT662-1 | Reel 13" Q1/T1 | Active | PCA9544ABS,118 (9352 758 05118) | 9544A | PCA9544ABS |    | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 |
- 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
- Expert mode sample code PCA9544A PCA9544APW
- PCA9544A IBIS model PCA9544APW
- plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 x 5 x 0.85 mm bga3131
- HVQFN20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... bga3131
- PCA9544A
- BGA3031
