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CD74HC85NSR

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Texas Instruments Digital Comparators, SO-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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CD74HC85NSR

Texas Instruments · Digital Comparators · SO-16

CD74HC85NSR from Texas Instruments, in a SO-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 B3 input Word B input bit 3, the most significant bit of the B word.
2 (A<B) IN input Cascading input for A<B from a previous stage; used for serial or parallel expansion.
3 (A=B) IN input Cascading input for A=B from a previous stage; used for serial or parallel expansion.
4 (A>B) IN input Cascading input for A>B from a previous stage; used for serial or parallel expansion.
5 (A>B) OUT output Comparison output that is high when A is greater than B.
6 (A=B) OUT output Comparison output that is high when A equals B.
7 (A<B) OUT output Comparison output that is high when A is less than B.
8 GND power_in Ground pin.
9 B0 input Word B input bit 0, the least significant bit of the B word.
10 A0 input Word A input bit 0, the least significant bit of the A word.
11 B1 input Word B input bit 1.
12 A1 input Word A input bit 1.
13 A2 input Word A input bit 2.
14 B2 input Word B input bit 2.
15 A3 input Word A input bit 3, the most significant bit of the A word.
16 VCC power_in Supply voltage, 2 V to 6 V for HC types, with a 0.1-µF bypass capacitor recommended close to the pin.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SO-16
Category Logic
Pins 16

CAD (KiCad official)

  • Symbol: CD74HC85NSR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SO-16 (KiCad packages3D, STEP)
  • 3D model files: cd74hc85nsr-etched.step / cd74hc85nsr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cd74hc85nsr.step / cd74hc85nsr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (28 pp, sha256 8e5304e70f9a263b, retrieved 2026-10-11, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF