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TUSB321AI

SLLSER2A – OCTOBER 2015 – REVISED MAY 2017

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Copyright © 2015–2017, 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

Switching Characteristics .......................................... 6

7

Detailed Description .............................................. 7

7.1

Overview ................................................................... 7

7.2

Functional Block Diagram ......................................... 8

7.3

Feature Description................................................... 8

7.4

Device Functional Modes........................................ 10

8

Application and Implementation ........................ 12

8.1

Application Information............................................ 12

8.2

Typical Application .................................................. 12

8.3

Initialization Set Up ................................................ 14

9

Power Supply Recommendations ...................... 14

10

Layout................................................................... 14

10.1

Layout Guidelines ................................................. 14

10.2

Layout Example .................................................... 14

11

Device and Documentation Support ................. 15

11.1

Documentation Support ....................................... 15

11.2

Community Resources.......................................... 15

11.3

Trademarks ........................................................... 15

11.4

Electrostatic Discharge Caution ............................ 15

11.5

Glossary ................................................................ 15

12

Mechanical, Packaging, and Orderable

Information ........................................................... 15

4 Revision History

Changes from Original (October 2015) to Revision A

Page

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Changed RVBUS values From: MIN = 891, TYP = 900, MAX = 909 KΩ To: MIN = 855, TYP = 887, MAX = 920 KΩ ........... 6