PCA9547BS: 带有复位的8通道I2C总线多路复用器

PCA9547 是一款八通道双向变换多路复用器,通过I²C总线进行控制。SCL/SDA上游对会扇出八个下游对或通道。一次只可选择一条SCx/SDx通道,由可编程控制寄存器的内容决定。器件上电时连接通道0,允许主器件和该通道上下游器件之间的立即通信。

低电平有效的复位输入允许PCA9547从某一下游I²C总线卡在低电平状态的情况下恢复。将1引脚拉至低电平会复位I²C总线状态机,使通道0除外的所有通道变为取消选择状态,从而使主器件可重新获得对总线的控制。

多路复用器的传递门如此构造,使得VDD引脚可用于限制PCA9547所传递的最高电压。这允许在各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。

PCA9547BS: 产品结构框图
PCA9547BS: 应用结构框图
Outline 3d SOT616-1
数据手册 (1)
名称/描述Modified Date
8-channel I2C-bus multiplexer with reset (REV 4.0) PDF (250.0 kB) PCA9547 [English]01 Apr 2014
应用说明 (1)
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
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; 24 terminals; body 4 x 4 x 0.85 mm (REV 1.0) PDF (202.0 kB) SOT616-1 [English]08 Feb 2016
包装 (1)
名称/描述Modified Date
HVQFN24; reel pack; standard product orientation; 12NC ending 118 (REV 1.0) PDF (196.0 kB) SOT616-1_118 [English]16 Jan 2014
Design Support
IBIS
订购信息
型号状态Package versionInterruptPower-on resetOperating Temperature (Cel)Reset input pinOperating voltage (VDC)InputsOutputsNo of AddressesI2C-bus (kHz)
PCA9547BSActiveSOT616-1yes-40~85yes2.3~5.5188400
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EFRIFR(FIT)MTBF(小时)MSLMSL LF
PCA9547BSSOT616-1Reel 13" Q1/T1ActivePCA9547BS,118 (9352 807 87118)9547PCA9547BSAlways Pb-free0.02.05E811
8-channel I2C-bus multiplexer with reset pca9547
Level shifting techniques in I2C-bus design pca9685pw
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 PCA9547 PCA9547PW
PCA9547 IBIS model PCA9547PW
plastic thermal enhanced very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.85 mm TFF1007HN
HVQFN24; reel pack; standard product orientation; 12NC ending 118 TFF1007HN
PCA9547
PCA9547
TFF11152HN