Table of Contents
1 特性................................................................................... 1
2 应用................................................................................... 1
3 说明................................................................................... 1
4 Revision History.............................................................. 2
5 Pin Configuration and Functions...................................3
6 Specifications.................................................................. 4
6.1 Absolute Maximum Ratings........................................ 4
6.2 ESD Ratings............................................................... 4
6.3 Recommended Operating Conditions.........................4
6.4 Thermal Information....................................................4
6.5 Electrical Characteristics.............................................6
6.6 I
2
C Interface Timing Requirements.............................8
6.7 Switching Characteristics............................................8
6.8 Interrupt Timing Requirements....................................8
7 Parameter Measurement Information............................ 9
8 Detailed Description...................................................... 11
8.1 Overview................................................................... 11
8.2 Functional Block Diagram......................................... 12
8.3 Feature Description...................................................13
8.4 Device Functional Modes..........................................13
8.5 Programming............................................................ 13
8.6 Register Map.............................................................15
9 Application Information Disclaimer............................. 18
9.1 Application Information............................................. 18
9.2 Typical Application.................................................... 18
10 Power Supply Recommendations..............................22
10.1 Power-On Reset Requirements.............................. 22
11 Layout........................................................................... 24
11.1 Layout Guidelines................................................... 24
11.2 Layout Example...................................................... 24
12 Device and Documentation Support..........................25
12.1 Receiving Notification of Documentation Updates..25
12.2 支持资源..................................................................25
12.3 Trademarks.............................................................25
12.4 静电放电警告.......................................................... 25
12.5 术语表..................................................................... 25
13 Mechanical, Packaging, and Orderable
Information.................................................................... 25
4 Revision History
Changes from Revision F (August 2019) to Revision G (March 2021) Page
• Changed the PW packgae values in the Thermal Information table...................................................................4
• Added the RGY package values in the Thermal Information table.....................................................................4
• Changed the V
PORR
row in the Electrical Characteristics .................................................................................. 6
• Added V
PORF
row to the Electrical Characteristics ............................................................................................ 6
• Changed the I
CC
Low inputs and High inputs values in the Electrical Characteristics .......................................6
• Changed the ΔI
CC
(INT3–INT0) MAX values From: 15 µA To: 20 µA in the Electrical Characteristics ...........6
• Changed the Application Curves ..................................................................................................................... 21
• Changed the Power Supply Recommendations .............................................................................................. 22
Changes from Revision E (June 2014) to Revision F (August 2019) Page
• 将文本从“PCA9544A 是一款四路双向转换开关”更改为“PCA9544A 是一款 4 通道双向转换多路复用器”
（在说明 中）。..................................................................................................................................................1
• 更改了
器件信息
表.............................................................................................................................................. 1
• Deleted the RGW, GQN, and ZQN packages from the Pin Configuration and Functions section......................3
• Moved T
stg
to the Absolute Maximum Ratings .................................................................................................. 4
• Changed the Handling Ratings table to ESD Ratings table................................................................................4
• Added the Thermal Information table................................................................................................................. 4
• Changed the first paragraph of the Overview section.......................................................................................11
• Changed text From: "bidirectional translating switch" To: "bidirectional translating multiplexer"...................... 13
• Changed text from: "One or several SCn/SDn downstream pairs or channels, are selected" To: "Only one
SCn/SDn downstream pair, or channel, can be selected" in the Control Register Definition section............... 16
• Deleted sentence: "If multiple switches will be enabled.." from the second paragraph of the Application
Information section........................................................................................................................................... 18
Changes from Revision D (February 2008) to Revision E (June 2014) Page
PCA9544A
ZHCSK60G – OCTOBER 2005 – REVISED MARCH 2021
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