TUSB8044 datasheet(2/61 Pages) TI1

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TUSB8044

SLLSEW5 – APRIL 2017

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Table of Contents

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

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

Description ............................................................. 1

Revision History..................................................... 2

Description (Continued) ........................................ 3

Pin Configuration and Functions ......................... 4

Specifications......................................................... 9

7.1

Absolute Maximum Ratings ..................................... 9

7.2

ESD Ratings.............................................................. 9

7.3

Recommended Operating Conditions ....................... 9

7.4

Thermal Information .................................................. 9

7.5

Electrical Characteristics, 3.3-V I/O ........................ 10

7.6

Timing Requirements, Power-Up ............................ 10

7.7

Hub Input Supply Current ....................................... 11

Detailed Description ............................................ 12

8.1

Overview ................................................................. 12

8.2

Functional Block Diagram ....................................... 12

8.3

Feature Description................................................. 13

8.4

Device Functional Modes........................................ 21

8.5

Applications and Implementation ...................... 43

9.1

Application Information............................................ 43

9.2

Typical Application .................................................. 43

Power Supply Recommendations ..................... 52

10.1

TUSB8044 Power Supply ..................................... 52

10.2

Downstream Port Power ....................................... 52

10.3

Ground .................................................................. 52

Layout................................................................... 53

11.1

Layout Guidelines ................................................. 53

11.2

Layout Examples................................................... 54

Device and Documentation Support ................. 56

12.1

Receiving Notification of Documentation Updates 56

12.2

Community Resources.......................................... 56

12.3

Trademarks ........................................................... 56

12.4

Electrostatic Discharge Caution ............................ 56

12.5

Glossary ................................................................ 56

Mechanical, Packaging, and Orderable

Information ........................................................... 56

4 Revision History

DATE

REVISION

NOTES

April 2017

Preliminary release.

TUSB8044 Datasheet(PDF) 2 Page - Texas Instruments

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