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74AHC74D

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by adom

Nexperia Flip Flops, SOP-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

markdown

74AHC74D

Nexperia · Flip Flops · SOP-14

74AHC74D from Nexperia, in a SOP-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1RD input Asynchronous reset direct input (active LOW); resets flip-flop independent of clock.
2 1D input Data input; transferred to 1Q on LOW to HIGH clock transition.
3 1CP input Clock input (LOW to HIGH, edge-triggered); controls data transfer to outputs.
4 1SD input Asynchronous set direct input (active LOW); sets flip-flop independent of clock.
5 1Q output True flip-flop output; reflects stored state from data and control inputs.
6 1Q̄ output Complement flip-flop output; inverted state of true output 1Q.
7 GND power_in Ground reference (0 V); supply current return path.
8 2Q̄ output Complement flip-flop output; inverted state of true output 2Q.
9 2Q output True flip-flop output; reflects stored state from data and control inputs.
10 2SD input Asynchronous set direct input (active LOW); sets flip-flop independent of clock.
11 2CP input Clock input (LOW to HIGH, edge-triggered); controls data transfer to outputs.
12 2D input Data input; transferred to 2Q on LOW to HIGH clock transition.
13 2RD input Asynchronous reset direct input (active LOW); resets flip-flop independent of clock.
14 VCC power_in Supply voltage; positive power supply (recommended 2.0 V to 5.5 V for 74AHC74).

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOP-14
Category Logic
Pins 14

CAD (KiCad official)

  • Symbol: 74AHC74D
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOP-14 (KiCad packages3D, STEP)
  • 3D model files: 74ahc74d-etched.step / 74ahc74d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74ahc74d.step / 74ahc74d.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (15 pp, sha256 16494543b3aab84c, retrieved 2026-09-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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