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SN74S140DR

Public Made by Adom

by adom

Texas Instruments Logic Gates, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74S140DR

Texas Instruments · Logic Gates · SOIC-14

SN74S140DR from Texas Instruments, in a SOIC-14. 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 1A input Input A of driver 1 (4-input positive-NAND, Y = ABCD inverted); input voltage max 5.5 V.
2 1B input Input B of driver 1; input voltage max 5.5 V.
3 NC unconnected No internal connection.
4 1C input Input C of driver 1; input voltage max 5.5 V.
5 1D input Input D of driver 1; input voltage max 5.5 V.
6 1Y output Output of driver 1, a 50-ohm line driver output implementing the NAND of 1A-1D.
7 GND power_in Ground; voltage values are specified with respect to this network ground terminal.
8 2Y output Output of driver 2, a 50-ohm line driver output implementing the NAND of 2A-2D.
9 2A input Input A of driver 2; input voltage max 5.5 V.
10 2B input Input B of driver 2; input voltage max 5.5 V.
11 NC unconnected No internal connection.
12 2C input Input C of driver 2; input voltage max 5.5 V.
13 2D input Input D of driver 2; input voltage max 5.5 V.
14 VCC power_in Supply voltage; absolute maximum 7 V with respect to GND.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-14
Category Logic
Pins 14

CAD (KiCad official)

  • Symbol: SN74S140DR
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: sn74s140dr-etched.step / sn74s140dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74s140dr.step / sn74s140dr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (20 pp, sha256 1843474d7d5037ec, retrieved 2026-10-08, tier: manufacturer)
  • 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