SCLS251I october   1995  – april 2023 SN54AHC240 , SN74AHC240

PRODMIX  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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, VCC = 3.3 V ±0.3 V
    7. 6.7 Switching Characteristics, VCC = 5 V ±0.5 V
    8. 6.8 Noise Characteristics
    9. 6.9 Operating Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Power Supply Recommendations
    2. 9.2 Layout
      1. 9.2.1 Layout Guidelines
        1. 9.2.1.1 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • NS|20
  • N|20
  • DW|20
  • PW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

These octal buffers/drivers are designed specifically to improve the performance and density of 3-state memory-address drivers, clock drivers, and bus-oriented receivers and transmitters.
Package Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
SN54AHC240 J (CDIP, 20) 24.2 mm × 6.92 mm
W (CFP, 20) 13.09 mm × 6.92 mm
FK (LCCC, 20) 8.89 mm × 8.89 mm
SN74AHC240 N (PDIP, 20) 24.33 mm × 6.35 mm
DW (SOIC, 20) 12.8 mm × 7.5 mm
NS (SOP, 20) 12.6 mm × 5.30 mm
PW (TSSOP, 20) 6.5 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
GUID-E15E0B2F-5840-4EF8-A956-0EB94A1B423C-low.gif Logic Diagram (Positive Logic)