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(1) .................... 4

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

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

5.5 Timing Requirements .................................................6

5.6 Switching Characteristics ...........................................7

5.7 Operating Characteristics........................................... 7

6 Parameter Measurement Information............................ 8

7 Detailed Description........................................................9

7.1 Overview..................................................................... 9

7.2 Functional Block Diagram........................................... 9

7.3 Device Functional Modes............................................9

8 Power Supply Recommendations................................10

9 Layout.............................................................................10

9.1 Layout Guidelines..................................................... 10

10 Device and Documentation Support..........................11

10.1 Receiving Notification of Documentation Updates.. 11

10.2 Support Resources................................................. 11

10.3 Trademarks............................................................. 11

10.4 Electrostatic Discharge Caution.............................. 11

10.5 Glossary.................................................................. 11

11 Mechanical, Packaging, and Orderable

Information.................................................................... 11

3 Revision History

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

Changes from Revision D (December 1982) to Revision E (February 2022)

Page

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

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

SN54HC166, SN74HC166

SCLS117E – DECEMBER 1982 – REVISED FEBRUARY 2022

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