TCA6408A-Q1 datasheet(2/40 Pages) TI1

Part #	TCA6408A-Q1

Description	Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output

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TCA6408A-Q1

SCPS234 – SEPTEMBER 2016

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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 ................ 11

8

Detailed Description ............................................ 15

8.1

Overview ................................................................. 15

8.2

Functional Block Diagrams ..................................... 16

8.3

Feature Description................................................. 18

8.4

Device Functional Modes........................................ 19

8.5

Programming .......................................................... 19

8.6

Register Map........................................................... 23

9

Application and Implementation ........................ 25

9.1

Application Information............................................ 25

9.2

Typical Application .................................................. 26

10

Power Supply Recommendations ..................... 29

10.1

Power-On Reset Requirements ........................... 29

11

Layout................................................................... 31

11.1

Layout Guidelines ................................................. 31

11.2

Layout Example .................................................... 31

12

Device and Documentation Support ................. 32

12.1

Receiving Notification of Documentation Updates 32

12.2

Community Resources.......................................... 32

12.3

Trademarks ........................................................... 32

12.4

Electrostatic Discharge Caution ............................ 32

12.5

Glossary ................................................................ 32

13

Mechanical, Packaging, and Orderable

Information ........................................................... 33

4 Revision History

DATE

REVISION

NOTES

September 2016

*

Initial release.

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