SCHS192C November   1998  – July 2022 CD54HC640 , CD54HCT640 , CD74HC640 , CD74HCT640

PRODUCTION DATA  

  1. 1 Features
  2. 2 Description
  3. 3 Revision History
  4. 4 Pin Configuration and Functions
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Switching Characteristics (2)
  6. 6 Parameter Measurement Information
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. 8 Power Supply Recommendations
  9. 9 Layout
    1. 9.1 Layout Guidelines
  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)
  • J|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

2 Description

The CDx4HC640 and CDx4HCT640 are inverting octal bus transceivers with 3-state outputs.

Device Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
CD54HC640 J (CDIP, 20) 26.92 mm × 6.92 mm
CD74HC640 N (PDIP, 20) 25.4 mm × 6.35 mm
DW (SOIC, 20) 12.80 mm × 7.50 mm
CD54HCT640 J (CDIP, 20) 26.92 mm × 6.92 mm
CD74HCT640 N (PDIP, 20) 25.40 mm × 6.35 mm
DW (SOIC, 20) 12.80 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
GUID-841B3863-A4D1-4709-864A-CF5A160AAC1B-low.png Functional Block Diagram