TCA9543A_15 Datasheet, PDF (2/32 Pages) Texas Instruments – TCA9543A Low Voltage 2-Channel I2C Bus Switch With Interrupt Logic And Reset

TCA9543A
SCPS206A – MARCH 2014 – REVISED FEBRUARY 2015
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Application Diagram............................ 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 I²C Interface Timing Requirements........................... 6
7.7 Switching Characteristics .......................................... 7
7.8 Interrupt and Reset Timing Requirements ................ 7
7.9 Typical Characteristics .............................................. 8
8 Parameter Measurement Information .................. 9
9 Detailed Description ............................................ 11
9.1 Overview ................................................................. 11
9.2 Functional Block Diagram ....................................... 11
9.3 Feature Description................................................. 12
9.4 Device Functional Modes........................................ 12
9.5 Programming........................................................... 12
9.6 Register Maps ......................................................... 14
10 Application and Implementation........................ 17
10.1 Application Information.......................................... 17
10.2 Typical Application ................................................ 17
11 Power Supply Recommendations ..................... 20
11.1 Power-On Reset Requirements ........................... 20
12 Layout................................................................... 22
12.1 Layout Guidelines ................................................. 22
12.2 Layout Example .................................................... 22
13 Device and Documentation Support ................. 23
13.1 Trademarks ........................................................... 23
13.2 Electrostatic Discharge Caution ............................ 23
13.3 Glossary ................................................................ 23
14 Mechanical, Packaging, and Orderable
Information ........................................................... 23
5 Revision History
Changes from Original (September 2012) to Revision A
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
• Added D package to the datasheet. ...................................................................................................................................... 1
• Changed Handling Ratings table to ESD Ratings. ................................................................................................................ 4
• Added D package to the Thermal Information table. ............................................................................................................. 4
2
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