2

TCA9543A

SCPS206B – MARCH 2014 – REVISED NOVEMBER 2019

www.ti.com

Product Folder Links: TCA9543A

Submit Documentation Feedback

Copyright © 2014–2019, Texas Instruments Incorporated

Table of Contents

1

Features .................................................................. 1

2

Applications ........................................................... 1

3

Description ............................................................. 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........................................... 5

6.6

I2C Interface Timing Requirements........................... 6

6.7

Switching Characteristics .......................................... 7

6.8

Interrupt and Reset Timing Requirements ................ 7

6.9

Typical Characteristics .............................................. 8

7

Parameter Measurement Information .................. 9

8

Detailed Description ............................................ 11

8.1

Overview ................................................................. 11

8.2

Functional Block Diagram ....................................... 11

8.3

Feature Description................................................. 12

8.4

Device Functional Modes........................................ 12

8.5

Programming........................................................... 12

8.6

Register Maps ......................................................... 14

9

Application and Implementation ........................ 17

9.1

Application Information............................................ 17

9.2

Typical Application .................................................. 17

10

Power Supply Recommendations ..................... 20

10.1

Power-On Reset Requirements ........................... 20

11

Layout................................................................... 22

11.1

Layout Guidelines ................................................. 22

11.2

Layout Example .................................................... 22

12

Device and Documentation Support ................. 23

12.1

Receiving Notification of Documentation Updates 23

12.2

Support Resources ............................................... 23

12.3

Trademarks ........................................................... 23

12.4

Electrostatic Discharge Caution ............................ 23

12.5

Glossary ................................................................ 23

13

Mechanical, Packaging, and Orderable

Information ........................................................... 23

4 Revision History

Changes from Revision A (February 2015) to Revision B

Page

•

Changed the Pin Configuration images appearance.............................................................................................................. 3

•

Changed VCC = 3.3 V to VCC = 2.5 V in Figure 16 .............................................................................................................. 17

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