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SN54AHCT240, SN74AHCT240

SCLS252M – OCTOBER 1995 – REVISED APRIL 2016

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Product Folder Links: SN54AHCT240 SN74AHCT240

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Copyright © 1995–2016, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

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

4

Simplified Schematic............................................. 1

5

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

6

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

7

Specifications......................................................... 4

7.1

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

7.2

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

7.3

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

7.4

Thermal Information .................................................. 5

7.5

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

7.6

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

7.7

Noise Characteristics ................................................ 6

7.8

Operating Characteristics.......................................... 6

7.9

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

8

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

9

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

9.1

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

9.2

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

9.3

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

9.4

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

10

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

10.1

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

10.2

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

11

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

12

Layout................................................................... 10

12.1

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

12.2

Layout Example .................................................... 10

13

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

13.1

Community Resources.......................................... 11

13.2

Related Links ........................................................ 11

13.3

Trademarks ........................................................... 11

13.4

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

13.5

Glossary ................................................................ 11

14

Mechanical, Packaging, and Orderable

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

5 Revision History

Changes from Revision L (October 2014) to Revision M

Page

•

Changed Handling Ratings table title to ESD Ratings .......................................................................................................... 2

•

Changed Handling Ratings table title to ESD Ratings .......................................................................................................... 4

•

Added –40°C to 85°C to SN74AHCT240 header in Electrical Characteristics table to differentiate from neighboring

temperature range. ................................................................................................................................................................. 5

•

Added –40°C to 85°C to SN74AHCT240 header in Switching Characteristics table to differentiate from neighboring

temperature range. ................................................................................................................................................................. 6

Changes from Revision K (July 2003) to Revision L

Page

•

Updated document to new TI data sheet format. ................................................................................................................... 1

•

Deleted Ordering Information table. ....................................................................................................................................... 1

•

Added Military Disclaimer to Features list. ............................................................................................................................. 1

•

Added Applications. ................................................................................................................................................................ 1

•

Extended operating temperature range to 125°C................................................................................................................... 4

•

Added Thermal Information table. .......................................................................................................................................... 5

•

Added –40°C to 125°C for SN74AHCT240 in the Electrical Specifications table. ................................................................ 5

•

Added –40°C to 125°C for SN74AHCT240 in the Switching Characteristics table. .............................................................. 6

•

Added Detailed Description section........................................................................................................................................ 8

•

Added Application and Implementation section...................................................................................................................... 9

•

Added Power Supply Recommendations and Layout sections............................................................................................ 10