SCHS136F August   1997  – February 2022 CD54HC85 , CD54HCT85 , CD74HC85 , CD74HCT85

PRODUCTION DATA  

  1. Features
  2. Description
  3. Revision History
  4. Pin Configuration and Functions
  5. Specifications
    1. 5.1 Absolute Maximum Ratings (1)
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Switching Specifications
  6. Parameter Measurement Information
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. Power Supply Recommendations
  9. Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 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|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Description

The ’HC85 and ’HCT85 are high speed magnitude comparators that use silicon-gate CMOS technology to achieve operating speeds similar to LSTTL with the low power consumption of standard CMOS integrated circuits.

These 4-bit devices compare two binary, BCD, or other monotonic codes and present the three possible magnitude results at the outputs (A > B, A < B, and A = B). The 4-bit input words are weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits.

Device Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
CD54HC85F3A CDIP (16) 24.38 mm × 6.92 mm
CD54HCT85F3A CDIP (16) 24.38 mm × 6.92 mm
CD74HC85M SOIC (16) 9.90 mm × 3.90 mm
CD74HCT85M SOIC (16) 9.90 mm × 3.90 mm
CD74HC85E PDIP (16) 19.31 mm × 6.35 mm
CD74HCT85E PDIP (16) 19.31 mm × 6.35 mm
CD74HC85NS SO (16) 6.20 mm × 5.30 mm
CD74HC85PW TSSOP (16) 5.00 mm × 4.40 mm
For all available packages, see the orderable addendum at the end of the data sheet.
GUID-AEB84EB2-2E0B-4BCA-ACB0-394C114904CC-low.gif Functional Diagram