SCLS252N October   1995  – February 2018 SN54AHCT240 , SN74AHCT240

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Noise Characteristics
    8. 6.8 Operating Characteristics
  7. 7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Community Resources
    2. 13.2 Related Links
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • W|20
  • J|20
  • FK|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

SN54AHCT240, J or W Package
SN74AHCT240, DB, DGV, DW, N, NS, or PW Package (20) Pin
Top View
SN54AHCT240 SN74AHCT240 po1_cls252.gif
SN54AHCT240 FK Package (20) Pin
Top View
SN54AHCT240 SN74AHCT240 po2_cls252.gif

Pin Functions

PINI/ODESCRIPTION
NAMENO.
1OE 1 I Output Enable 1
1A1 2 I 1A1 Input
2Y4 3 O 2Y4 Output
1A2 4 I 1A2 Input
2Y3 5 O 2Y3 Output
1A3 6 I 1A3 Input
2Y2 7 O 2Y2 Output
1A4 8 I 1A4 Input
2Y1 9 O 2Y1 Output
GND 10 — Ground Pin
2A1 11 I 2A1 Input
1Y4 12 O 1Y4 Output
2A2 13 I 2A2 Input
1Y3 14 O 1Y3 Output
2A3 15 I 2A3 Input
1Y2 16 O 1Y2 Output
2A4 17 I 2A4 Input
1Y1 18 O 1Y1 Output
2OE 19 I Output Enable 2
VCC 20 — Power Pin