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SN74AHCT123ADR

Public Made by Adom

by adom

Texas Instruments Monostable Multivibrators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74AHCT123ADR

Texas Instruments · Monostable Multivibrators · SOIC-16

SN74AHCT123ADR from Texas Instruments, in a SOIC-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 1A input Channel 1 falling edge trigger input when 1B = H; Hold low for other input methods
2 1B input Channel 1 rising edge trigger input when 1A = L; Hold high for other input methods
3 1CLR input Channel 1 rising edge trigger when 1A = L and 1B = H; Hold high for other input methods; Can cut pulse length short by driving low during output
4 1Q output Channel 1 inverted output
5 2Q output Channel 2 output
6 2Cext passive Channel 2 external capacitor negative connection
7 2Rext/Cext passive Channel 2 external capacitor and resistor junction connection
8 GND power_in Ground
9 2A input Channel 2 falling edge trigger input when 2B = H; Hold low for other input methods
10 2B input Channel 2 rising edge trigger input when 2A = L; Hold high for other input methods
11 2CLR input Channel 2 rising edge trigger when 2A = L and 2B = H; Hold high for other input methods; Can cut pulse length short by driving low during output
12 2Q output Channel 2 inverted output
13 1Q output Channel 1 output
14 1Cext passive Channel 1 external capacitor negative connection
15 1Rext/Cext passive Channel 1 external capacitor and resistor junction connection
16 VCC power_in Power supply

Key specifications

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

CAD (KiCad official)

  • Symbol: SN74AHCT123ADR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16 (KiCad packages3D, STEP)
  • 3D model files: sn74ahct123adr-etched.step / sn74ahct123adr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahct123adr.step / sn74ahct123adr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 877bd373993eb71c, retrieved 2026-10-07, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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