带复位功能的4通道I²C总线开关

PCA9546A 正常供应

PCA9546A是一款四路双向转换开关，通过I²C总线进行控制。SCL/SDA上游对会扇出四个下游对或通道。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端允许PCA9546A从某个下游I²C总线停滞于低电平状态的情形中恢复过来。和内部上电复位(POR)功能一样，将RESET引脚拉至低电平也可将I²C总线状态机复位，并导致所有通道均处于未选定状态。

这些开关的传输门构造使得VDD引脚可用于限制PCA9546A传递的最大高压。这样就可以在每一对上使用不同的总线电压，从而使1.8V、2.5V或3.3V的部件无需额外保护即可与5V的部件进行通信。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引脚均可容许5V电压。

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产品详情

框图

选择框图:

PCA9546A

PCA9546A Block Diagram

PCA9546ABS, PCA9546AD, PCA9546APW

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特性

主要特性

  • 4选1双向转换开关
  • I²C总线接口逻辑；兼容SMBus标准
  • 低电平有效的复位输入
  • 3个地址引脚，允许最多8个器件连接至I²C总线
  • 通过I²C总线以任意组合进行通道选择
  • 在所有开关通道均不选定的情况下上电
  • 低导通电阻开关
  • 允许在1.8V、2.5V、3.3V和5V总线之间进行电压电平转换
  • 上电时无脉冲干扰
  • 支持热插入
  • 低待机电流
  • 工作电源电压范围：2.3V至5.5V
  • 容许5V输入
  • 0Hz至400kHz的时钟频率
  • ESD保护：按JESD22-A114超过2000V HBM，按JESD22-C101超过1000V CDM
  • 根据JEDEC标准JESD78完成超过100mA的闭锁测试

封装方式

  • SO16、TSSOP16和HVQFN16

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N true 0 PSPPCA9546Azh 13 包装信息 Packing Information t935 2 封装信息 Package Information t790 2 应用笔记 Application Note t789 2 手册 Brochure t518 1 支持信息 Supporting Information t531 2 数据手册 Data Sheet t520 1 用户指南 User Guide t792 2 简介 Fact Sheet t523 1 zh zh zh 数据手册 Data Sheet 1 1 6.0 English 1442067791308712175203 PSP 273.2 KB None None documents None 1442067791308712175203 /docs/en/data-sheet/PCA9546A.pdf 273232 /docs/en/data-sheet/PCA9546A.pdf PCA9546A documents N N 2014-04-30 4-channel I2C-bus switch with reset /docs/en/data-sheet/PCA9546A.pdf /docs/en/data-sheet/PCA9546A.pdf Data Sheet N 980000996212993340 2022-12-07 pdf N en Apr 30, 2014 980000996212993340 Data Sheet Y N 4-channel I2C-bus switch with reset 应用笔记 Application Note 2 2 1.0 English Level shifting techniques in I2C-bus design 1442089228752700755238 PSP 53.7 KB Registration without Disclaimer None documents Extended 1442089228752700755238 /secured/assets/documents/en/application-note/AN10441.pdf 53707 /secured/assets/documents/en/application-note/AN10441.pdf AN10441 documents Y N 2016-07-11 AN10441, Level Shifting Techniques in I²C-Bus Design - Application Note /webapp/Download?colCode=AN10441&lang_cd=zh /secured/assets/documents/en/application-note/AN10441.pdf Application Note N 645036621402383989 2024-07-12 pdf Y en Jun 20, 2007 645036621402383989 Application Note Y N AN10441, Level Shifting Techniques in I²C-Bus Design - Application Note 3 2.0 English 1442087835667690821743 PSP 826.2 KB None None documents None 1442087835667690821743 /docs/en/application-note/AN262.pdf 826199 /docs/en/application-note/AN262.pdf AN262 documents N N 2011-07-04 AN262 /docs/en/application-note/AN262.pdf /docs/en/application-note/AN262.pdf Application Note N 645036621402383989 2024-03-13 pdf N en Oct 1, 2004 645036621402383989 Application Note Y N AN262 用户指南 User Guide 2 4 6.0 Japanese 1442125286808710770774ja PSP 751.0 KB None None documents None 1442125286808710770774 /docs/ja/user-guide/UM10204.pdf 750958 /docs/ja/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/ja/user-guide/UM10204.pdf /docs/ja/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 ja Apr 28, 2014 132339537837198660 User Guide Y N I2C-bus specification and user manual 7.0 English NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. 1442125286808710770774 PSP 751.0 KB None None documents None 1442125286808710770774 /docs/en/user-guide/UM10204.pdf 750958 /docs/en/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf /docs/en/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 pdf N en Oct 1, 2021 132339537837198660 User Guide Y N I2C-bus specification and user manual 5 1.0 English 1442125429801702674389 PSP 749.6 KB Registration without Disclaimer None documents Extended 1442125429801702674389 /secured/assets/documents/en/user-guide/UM10528.pdf 749626 /secured/assets/documents/en/user-guide/UM10528.pdf UM10528 documents Y N 2012-02-06 PCA9632 demonstration board OM13269 /webapp/Download?colCode=UM10528&lang_cd=zh /secured/assets/documents/en/user-guide/UM10528.pdf User Guide N 132339537837198660 2025-02-10 pdf Y en Feb 6, 2012 132339537837198660 User Guide Y N PCA9632 demonstration board OM13269 手册 Brochure 1 6 1.0 English 1442124653171725284460 PSP 656.7 KB None None documents None 1442124653171725284460 /docs/en/brochure/75016529.pdf 656663 /docs/en/brochure/75016529.pdf 75016529 documents N N 2011-09-12 Add design fl exibility with multi-channel I2C/SMBus muxes and switches; NXP 2-, 4-, and 8-channel I2C/SMBus muxes and switches PCA954x /docs/en/brochure/75016529.pdf /docs/en/brochure/75016529.pdf Brochure N 712453003803778552 2024-08-21 pdf N en Apr 8, 2018 712453003803778552 Brochure Y N Add design fl exibility with multi-channel I2C/SMBus muxes and switches; NXP 2-, 4-, and 8-channel I2C/SMBus muxes and switches PCA954x 简介 Fact Sheet 1 7 1 English 1557513331449729197888 PSP 436.6 KB None None documents None 1557513331449729197888 /docs/en/fact-sheet/PCA9xx-FactSheet.pdf 436600 /docs/en/fact-sheet/PCA9xx-FactSheet.pdf PCA9XX-FACTSHEET documents N N 2019-05-10 PCA9XX FactSheet /docs/en/fact-sheet/PCA9xx-FactSheet.pdf /docs/en/fact-sheet/PCA9xx-FactSheet.pdf Fact Sheet N 736675474163315314 2022-12-07 pdf N en May 10, 2019 736675474163315314 Fact Sheet Y N PCA9XX FactSheet 封装信息 Package Information 2 8 1.0 English 1455079748152709896565 PSP 191.3 KB None None documents None 1455079748152709896565 /docs/en/package-information/SOT629-1.pdf 191347 /docs/en/package-information/SOT629-1.pdf SOT629-1 documents N N 2016-02-12 plastic thermal enhanced very thin quad flat package; no leads; 16 terminals; body 4 x 4 x 0.85 mm /docs/en/package-information/SOT629-1.pdf /docs/en/package-information/SOT629-1.pdf Package Information N 302435339416912908 2024-10-24 pdf N en Dec 8, 2021 302435339416912908 Package Information Y N plastic thermal enhanced very thin quad flat package; no leads; 16 terminals; body 4 x 4 x 0.85 mm 9 1.2 English 1455079016613696797754 PSP 298.1 KB None None documents None 1455079016613696797754 /docs/en/package-information/SOT403-1.pdf 298149 /docs/en/package-information/SOT403-1.pdf SOT403-1 documents N N 2016-10-08 plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body /docs/en/package-information/SOT403-1.pdf /docs/en/package-information/SOT403-1.pdf Package Information N 302435339416912908 2024-10-24 pdf N en Dec 10, 2019 302435339416912908 Package Information Y N plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body PDF 包装信息 Packing Information 2 10 1.0 English 1442131817357697408743 PSP 264.7 KB None None documents None 1442131817357697408743 /docs/en/packing/SOT629-1_118.pdf 264742 /docs/en/packing/SOT629-1_118.pdf SOT629-1_118 documents N N 2013-04-17 HVQFN16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /docs/en/packing/SOT629-1_118.pdf /docs/en/packing/SOT629-1_118.pdf Packing Information N 145666923842250347 2024-10-21 pdf N en Apr 17, 2013 145666923842250347 Packing Information Y N HVQFN16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 11 1.0 English 1442131582751712117334 PSP 223.6 KB None None documents None 1442131582751712117334 /docs/en/packing/SOT403-1_118.pdf 223589 /docs/en/packing/SOT403-1_118.pdf SOT403-1_118 documents N N 2013-04-17 TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /docs/en/packing/SOT403-1_118.pdf /docs/en/packing/SOT403-1_118.pdf Packing Information N 145666923842250347 2024-10-21 pdf N en Apr 8, 2013 145666923842250347 Packing Information Y N TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 支持信息 Supporting Information 2 12 1.0 English Footprint for Wave Soldering 1442126382106720903168 PSP 8.3 KB None None documents None 1442126382106720903168 /docs/en/supporting-information/SO-SOJ-WAVE.pdf 8260 /docs/en/supporting-information/SO-SOJ-WAVE.pdf SO-SOJ-WAVE documents N N 2013-07-15 Footprint for Wave Soldering /docs/en/supporting-information/SO-SOJ-WAVE.pdf /docs/en/supporting-information/SO-SOJ-WAVE.pdf Supporting Information N 371282830530968666 2024-10-21 pdf N en Oct 8, 2009 371282830530968666 Supporting Information Y N Footprint for Wave Soldering 13 1.0 English Footprint for reflow soldering 1442122730480711091281 PSP 8.8 KB None None documents None 1442122730480711091281 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf 8792 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf SO-SOJ-REFLOW documents N N 2013-07-15 Footprint for reflow soldering /docs/en/supporting-information/SO-SOJ-REFLOW.pdf /docs/en/supporting-information/SO-SOJ-REFLOW.pdf Supporting Information N 371282830530968666 2024-10-21 pdf N en Oct 8, 2009 371282830530968666 Supporting Information Y N Footprint for reflow soldering false 0 PCA9546A downloads zh-Hans true 1 Y PSP Y Y 包装信息 2 /docs/en/packing/SOT629-1_118.pdf 2013-04-17 1442131817357697408743 PSP 10 Apr 17, 2013 Packing Information None /docs/en/packing/SOT629-1_118.pdf English documents 264742 None 145666923842250347 2024-10-21 N /docs/en/packing/SOT629-1_118.pdf HVQFN16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /docs/en/packing/SOT629-1_118.pdf documents 145666923842250347 Packing Information N en None Y pdf 1.0 N N HVQFN16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 264.7 KB SOT629-1_118 N 1442131817357697408743 /docs/en/packing/SOT403-1_118.pdf 2013-04-17 1442131582751712117334 PSP 11 Apr 8, 2013 Packing Information None /docs/en/packing/SOT403-1_118.pdf English documents 223589 None 145666923842250347 2024-10-21 N /docs/en/packing/SOT403-1_118.pdf TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /docs/en/packing/SOT403-1_118.pdf documents 145666923842250347 Packing Information N en None Y pdf 1.0 N N TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 223.6 KB SOT403-1_118 N 1442131582751712117334 封装信息 2 /docs/en/package-information/SOT629-1.pdf 2016-02-12 1455079748152709896565 PSP 8 Dec 8, 2021 Package Information None /docs/en/package-information/SOT629-1.pdf English documents 191347 None 302435339416912908 2024-10-24 N /docs/en/package-information/SOT629-1.pdf plastic thermal enhanced very thin quad flat package; no leads; 16 terminals; body 4 x 4 x 0.85 mm /docs/en/package-information/SOT629-1.pdf documents 302435339416912908 Package Information N en None Y pdf 1.0 N N plastic thermal enhanced very thin quad flat package; no leads; 16 terminals; body 4 x 4 x 0.85 mm 191.3 KB SOT629-1 N 1455079748152709896565 /docs/en/package-information/SOT403-1.pdf 2016-10-08 1455079016613696797754 PSP 9 Dec 10, 2019 Package Information PDF None /docs/en/package-information/SOT403-1.pdf English documents 298149 None 302435339416912908 2024-10-24 N /docs/en/package-information/SOT403-1.pdf plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body /docs/en/package-information/SOT403-1.pdf documents 302435339416912908 Package Information N en None Y pdf 1.2 N N plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body 298.1 KB SOT403-1 N 1455079016613696797754 应用笔记 2 /secured/assets/documents/en/application-note/AN10441.pdf 2016-07-11 1442089228752700755238 PSP 2 Jun 20, 2007 Application Note Level shifting techniques in I2C-bus design Registration without Disclaimer /secured/assets/documents/en/application-note/AN10441.pdf English documents 53707 None 645036621402383989 2024-07-12 Y /webapp/Download?colCode=AN10441&lang_cd=zh AN10441, Level Shifting Techniques in I²C-Bus Design - Application Note /secured/assets/documents/en/application-note/AN10441.pdf documents 645036621402383989 Application Note N en Extended Y pdf 1.0 Y N AN10441, Level Shifting Techniques in I²C-Bus Design - Application Note 53.7 KB AN10441 N 1442089228752700755238 /docs/en/application-note/AN262.pdf 2011-07-04 1442087835667690821743 PSP 3 Oct 1, 2004 Application Note None /docs/en/application-note/AN262.pdf English documents 826199 None 645036621402383989 2024-03-13 N /docs/en/application-note/AN262.pdf AN262 /docs/en/application-note/AN262.pdf documents 645036621402383989 Application Note N en None Y pdf 2.0 N N AN262 826.2 KB AN262 N 1442087835667690821743 手册 1 /docs/en/brochure/75016529.pdf 2011-09-12 1442124653171725284460 PSP 6 Apr 8, 2018 Brochure None /docs/en/brochure/75016529.pdf English documents 656663 None 712453003803778552 2024-08-21 N /docs/en/brochure/75016529.pdf Add design fl exibility with multi-channel I2C/SMBus muxes and switches; NXP 2-, 4-, and 8-channel I2C/SMBus muxes and switches PCA954x /docs/en/brochure/75016529.pdf documents 712453003803778552 Brochure N en None Y pdf 1.0 N N Add design fl exibility with multi-channel I2C/SMBus muxes and switches; NXP 2-, 4-, and 8-channel I2C/SMBus muxes and switches PCA954x 656.7 KB 75016529 N 1442124653171725284460 支持信息 2 /docs/en/supporting-information/SO-SOJ-WAVE.pdf 2013-07-15 1442126382106720903168 PSP 12 Oct 8, 2009 Supporting Information Footprint for Wave Soldering None /docs/en/supporting-information/SO-SOJ-WAVE.pdf English documents 8260 None 371282830530968666 2024-10-21 N /docs/en/supporting-information/SO-SOJ-WAVE.pdf Footprint for Wave Soldering /docs/en/supporting-information/SO-SOJ-WAVE.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Footprint for Wave Soldering 8.3 KB SO-SOJ-WAVE N 1442126382106720903168 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf 2013-07-15 1442122730480711091281 PSP 13 Oct 8, 2009 Supporting Information Footprint for reflow soldering None /docs/en/supporting-information/SO-SOJ-REFLOW.pdf English documents 8792 None 371282830530968666 2024-10-21 N /docs/en/supporting-information/SO-SOJ-REFLOW.pdf Footprint for reflow soldering /docs/en/supporting-information/SO-SOJ-REFLOW.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Footprint for reflow soldering 8.8 KB SO-SOJ-REFLOW N 1442122730480711091281 数据手册 1 /docs/en/data-sheet/PCA9546A.pdf 2014-04-30 1442067791308712175203 PSP 1 Apr 30, 2014 Data Sheet None /docs/en/data-sheet/PCA9546A.pdf English documents 273232 None 980000996212993340 2022-12-07 N /docs/en/data-sheet/PCA9546A.pdf 4-channel I2C-bus switch with reset /docs/en/data-sheet/PCA9546A.pdf documents 980000996212993340 Data Sheet N en None Y pdf 6.0 N N 4-channel I2C-bus switch with reset 273.2 KB PCA9546A N 1442067791308712175203 用户指南 2 /docs/en/user-guide/UM10204.pdf 2016-07-12 1442125286808710770774 PSP 4 Oct 1, 2021 User Guide NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. None /docs/en/user-guide/UM10204.pdf English documents 750958 None 132339537837198660 2024-10-24 N /docs/en/user-guide/UM10204.pdf I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf documents 132339537837198660 User Guide N en None Y pdf 7.0 N N I2C-bus specification and user manual 751.0 KB UM10204 N 1442125286808710770774 /secured/assets/documents/en/user-guide/UM10528.pdf 2012-02-06 1442125429801702674389 PSP 5 Feb 6, 2012 User Guide Registration without Disclaimer /secured/assets/documents/en/user-guide/UM10528.pdf English documents 749626 None 132339537837198660 2025-02-10 Y /webapp/Download?colCode=UM10528&lang_cd=zh PCA9632 demonstration board OM13269 /secured/assets/documents/en/user-guide/UM10528.pdf documents 132339537837198660 User Guide N en Extended Y pdf 1.0 Y N PCA9632 demonstration board OM13269 749.6 KB UM10528 N 1442125429801702674389 简介 1 /docs/en/fact-sheet/PCA9xx-FactSheet.pdf 2019-05-10 1557513331449729197888 PSP 7 May 10, 2019 Fact Sheet None /docs/en/fact-sheet/PCA9xx-FactSheet.pdf English documents 436600 None 736675474163315314 2022-12-07 N /docs/en/fact-sheet/PCA9xx-FactSheet.pdf PCA9XX FactSheet /docs/en/fact-sheet/PCA9xx-FactSheet.pdf documents 736675474163315314 Fact Sheet N en None Y pdf 1 N N PCA9XX FactSheet 436.6 KB PCA9XX-FACTSHEET N 1557513331449729197888 true Y Products

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紧凑列表

包装信息 (2)
封装信息 (2)
应用笔记 (2)
手册 (1)
支持信息 (2)
数据手册 (1)
用户指南 (2)
简介 (1)

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