PCA9548A: 带有复位的8通道I2C总线开关

PCA9548A是一款八通道双向变换开关,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。可选择任何单独的SCx/SDx通道或通道组合,由可编程控制寄存器的内容决定。

低电平有效的复位输入允许PCA9548A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总线状态机并使所有通道变为取消选择状态,如同内部上电复位功能。

开关的传递门如此构造,使得VDD引脚可用于限制PCA9548A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。

PCA9548A: 产品结构框图
Outline 3d SOT616-1
数据手册 (1)
名称/描述Modified Date
8-channel I2C-bus switch with reset (REV 5.1) PDF (301.0 kB) PCA9548A [English]01 Oct 2015
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 (3)
名称/描述Modified Date
plastic small outline package; 24 leads; body width 7.5 mm (REV 1.0) PDF (379.0 kB) SOT137-1 [English]08 Feb 2016
plastic thin shrink small outline package; 24 leads; body width 4.4 mm (REV 1.0) PDF (353.0 kB) SOT355-1 [English]08 Feb 2016
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 (4)
名称/描述Modified Date
HVQFN24; Reel pack; SMD, 13", Q2/T3 Turned product orientation Orderable part number ending ,128 or HP Ordering code... (REV 1.0) PDF (185.0 kB) SOT616-1_128 [English]16 Jul 2014
HVQFN24; reel pack; standard product orientation; 12NC ending 118 (REV 1.0) PDF (196.0 kB) SOT616-1_118 [English]16 Jan 2014
TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.1) PDF (227.0 kB) SOT355-1_118 [English]15 Apr 2013
SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 4.0) PDF (235.0 kB) SOT137-1_118 [English]12 Apr 2013
支持信息 (2)
名称/描述Modified Date
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
Design Support
IBIS
订购信息
型号状态
PCA9548APWActive
PCA9548ABSActive
PCA9548ADActive
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
PCA9548ABSSOT616-1Reel 13" Q2/T3ActivePCA9548ABSHP (9352 758 14128)548APCA9548ABSAlways Pb-free0.02.05E811
Reel 13" Q1/T1ActivePCA9548ABS,118 (9352 758 14118)548APCA9548ABSAlways Pb-free0.02.05E811
PCA9548APWSOT355-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActivePCA9548APW,118 (9352 758 16118)PCA9548APCA9548APWweek 13, 20050.02.05E811
Bulk PackActivePCA9548APW,112 (9352 758 16112)PCA9548APCA9548APWweek 13, 20050.02.05E811
PCA9548ADSOT137-1SO-SOJ-WAVEReel 13" Q1/T1ActivePCA9548AD,118 (9352 758 15118)PCA9548ADPCA9548ADweek 13, 20050.02.05E811
Bulk PackActivePCA9548AD,112 (9352 758 15112)PCA9548ADPCA9548ADweek 13, 20050.02.05E811
8-channel I2C-bus switch with reset pca9548a
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 PCA9548A PCA9548APW
PCA9548A IBIS model PCA9548APW
plastic thermal enhanced very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.85 mm TFF1007HN
HVQFN24; Reel pack; SMD, 13", Q2/T3 Turned product orientation Orderable part number ending ,128 or HP Ordering code... pca9548a
HVQFN24; reel pack; standard product orientation; 12NC ending 118 TFF1007HN
plastic thin shrink small outline package; 24 leads; body width 4.4 mm 74LVC4245A_Q100
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... 74LVC4245A_Q100
plastic small outline package; 24 leads; body width 7.5 mm 74LVC4245A_Q100
Footprint for wave soldering NPIC6C596A_Q100
SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... 74LVC4245A_Q100
PCA9548A
TFF11152HN
SA639DH
PCA9552