2

TCA9538

SCPS199D – AUGUST 2014 – REVISED OCTOBER 2016

www.ti.com

Product Folder Links: TCA9538

Submit Documentation Feedback

Copyright © 2014–2016, 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 .................................................. 5

6.5

Electrical Characteristics........................................... 5

6.6

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

6.7

RESET Timing Requirements ................................... 7

6.8

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

6.9

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

7

Parameter Measurement Information ................ 10

8

Detailed Description ............................................ 14

8.1

Overview ................................................................. 14

8.2

Functional Block Diagram ....................................... 15

8.3

Feature Description................................................. 16

8.4

Device Functional Modes........................................ 17

8.5

Programming........................................................... 17

8.6

Register Map........................................................... 19

9

Application and Implementation ........................ 23

9.1

Application Information............................................ 23

9.2

Typical Application ................................................. 23

10

Power Supply Recommendations ..................... 26

10.1

Power-On Reset Requirements ........................... 26

11

Layout................................................................... 28

11.1

Layout Guidelines ................................................. 28

11.2

Layout Example .................................................... 28

12

Device and Documentation Support ................. 29

12.1

Documentation Support ........................................ 29

12.2

Receiving Notification of Documentation Updates 29

12.3

Community Resources.......................................... 29

12.4

Trademarks ........................................................... 29

12.5

Electrostatic Discharge Caution ............................ 29

12.6

Glossary ................................................................ 29

13

Mechanical, Packaging, and Orderable

Information ........................................................... 29

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision C (October 2015) to Revision D

Page

•

Updated Figure 18 ............................................................................................................................................................... 19

Changes from Revision B (September 2015) to Revision C

Page

•

Added "Time to reset; VCC = 1.65 V-2.3 V" parameter to RESET Timing Requirements table. ............................................ 7

•

Added "Output data valid; VCC = 1.65 V-2.3 V" to Switching Characteristics table................................................................ 7

•

Updated VCC_GW parameter. ................................................................................................................................................ 26

Changes from Revision A (September 2014) to Revision B

Page

•

Added DB package to datasheet. .......................................................................................................................................... 1

Changes from Original (August 2014) to Revision A

Page

•

Updated document to full version. ......................................................................................................................................... 1