Table of Contents

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

2 Description.......................................................................1

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

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

5 Specifications.................................................................. 4

5.1 Absolute Maximum Ratings........................................ 4

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

5.3 Thermal Information....................................................4

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

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

6 Parameter Measurement Information............................ 7

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

7.1 Overview..................................................................... 8

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

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

8 Power Supply Recommendations..................................9

9 Layout...............................................................................9

9.1 Layout Guidelines....................................................... 9

10 Device and Documentation Support..........................10

10.1 Documentation Support.......................................... 10

10.2 Receiving Notification of Documentation Updates..10

10.3 Support Resources................................................. 10

10.4 Trademarks.............................................................10

10.5 Electrostatic Discharge Caution..............................10

10.6 Glossary..................................................................10

11 Mechanical, Packaging, and Orderable

Information.................................................................... 10

3 Revision History

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

Changes from Revision D (October 2003) to Revision E (March 2022)

Page

• Updated the numbering, formatting, tables, figures, and cross-references throughout the document to reflect

modern data sheet standards............................................................................................................................. 1

CD54HC243, CD74HC243, CD54HCT243, CD74HCT243

SCHS168E – NOVEMBER 1998 – REVISED MARCH 2022

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