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SN74HC158DT

Public Made by Adom

by adom

Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74HC158DT

Texas Instruments · Signal Switches, Multiplexers, Decoders · SOIC-16

SN74HC158DT 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 A/B input Data select input; low selects A inputs, high selects B inputs for all channels
2 1A input Data input A for channel 1; selected when A/B is low
3 1B input Data input B for channel 1; selected when A/B is high
4 1Y output Inverted output for channel 1; outputs inverted data from selected input when G is low, high when G is high
5 2A input Data input A for channel 2; selected when A/B is low
6 2B input Data input B for channel 2; selected when A/B is high
7 2Y output Inverted output for channel 2; outputs inverted data from selected input when G is low, high when G is high
8 GND power_in Ground; connection point for logic reference (0 V)
9 3Y output Inverted output for channel 3; outputs inverted data from selected input when G is low, high when G is high
10 3B input Data input B for channel 3; selected when A/B is high
11 3A input Data input A for channel 3; selected when A/B is low
12 4Y output Inverted output for channel 4; outputs inverted data from selected input when G is low, high when G is high
13 4B input Data input B for channel 4; selected when A/B is high
14 4A input Data input A for channel 4; selected when A/B is low
15 G input Strobe (output enable) input, active low; outputs are high when G is high, selected data routed to outputs when G is low
16 VCC power_in Supply voltage, positive power connection; operating voltage range 2 V to 6 V

Key specifications

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

CAD (KiCad official)

  • Symbol: SN74HC158DT
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16 (KiCad packages3D, STEP)
  • 3D model files: sn74hc158dt-etched.step / sn74hc158dt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hc158dt.step / sn74hc158dt.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (19 pp, sha256 2dab2a1df902eb79, retrieved 2026-10-05, tier: lcsc)
  • 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