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CD74HC85E - High-Speed CMOS Logic 4-Bit Magnitude Comparator

Download the CD74HC85E datasheet PDF. This datasheet also covers the CD74HC85 variant, as both devices belong to the same high-speed cmos logic 4-bit magnitude comparator family and are provided as variant models within a single manufacturer datasheet.

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Note: The manufacturer provides a single datasheet file (CD74HC85-etcTI.pdf) that lists specifications for multiple related part numbers.

General 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.

Overview

CD54HC85, CD74HC85, CD54HCT85, CD74HCT85 SCHS136F – AUGUST 1997 – REVISED FEBRUARY 2022 CDx4HC85, CDx4HCT85 High-Speed CMOS Logic 4-Bit Magnitude Comparator.

Key Features

  • Buffered inputs and outputs.
  • Typical propagation delay: 13 ns (data to output at VCC = 5 V, CL = 15 pF, TA = 25℃).
  • Serial or parallel expansion without external gating.
  • Fanout (over temperature range).
  • Standard outputs: 10 LSTTL loads.
  • Bus driver outputs: 15 LSTTL loads.
  • Wide operating temperature range:.
  • 55℃ to 125℃.
  • Balanced propagation delay and transition times.
  • Significant power reduction compared to L.

More Datasheets from Texas Instruments

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