DS8921, DS8921A, DS8921AT

SNLS374D – MAY 1998 – REVISED JANUARY 2015

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Table of Contents

8.1

Overview ................................................................... 8

1

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

8.2

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

2

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

8.3

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

3

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

8.4

Device Functional Modes.......................................... 8

4

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

9

Application and Implementation .......................... 9

5

Pin Configuration and Functions ......................... 3

9.1

Application Information.............................................. 9

6

Specifications......................................................... 3

9.2

Typical Application .................................................... 9

6.1

Absolute Maximum Ratings ...................................... 3

10

Power Supply Recommendations ..................... 12

6.2

ESD Ratings.............................................................. 4

11

Layout................................................................... 12

6.3

Recommended Operating Conditions ....................... 4

11.1

Layout Guidelines ................................................. 12

6.4

Electrical Characteristics........................................... 4

11.2

Layout Example .................................................... 12

6.5

Receiver Switching Characteristics .......................... 5

12

Device and Documentation Support ................. 13

6.6

Driver Switching Characteristics: Single-Ended

Characteristics ........................................................... 5

12.1

Related Links ........................................................ 13

6.7

Driver Switching Characteristics: Differential

12.2

Trademarks ........................................................... 13

Characteristics ........................................................... 5

12.3

Electrostatic Discharge Caution ............................ 13

6.8

Typical Characteristics .............................................. 6

12.4

Glossary ................................................................ 13

7

Parameter Measurement Information .................. 6

13

Mechanical, Packaging, and Orderable

7.1

AC Test Circuits and Switching Diagrams ................ 6

Information ........................................................... 13

8

Detailed Description .............................................. 8

4 Revision History

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

Changes from Revision C (April 2013) to Revision D

Page

•

Added 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

Changes from Revision B (November 2004) to Revision C

Page

•

Changed layout of National Data Sheet to TI format. ........................................................................................................... 1

2

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