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SN74LS156NSR

Public Made by Adom

by adom

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

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SN74LS156NSR

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

SN74LS156NSR 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 1C input Data input for section 1; data applied at 1C is inverted at the 1Y outputs.
2 1G input Active-low strobe (enable) input for section 1.
3 B input Binary-address select input common to both sections.
4 1Y3 output Open-collector output 3 of section 1.
5 1Y2 output Open-collector output 2 of section 1.
6 1Y1 output Open-collector output 1 of section 1.
7 1Y0 output Open-collector output 0 of section 1.
8 GND power_in Ground.
9 2Y0 output Open-collector output 0 of section 2.
10 2Y1 output Open-collector output 1 of section 2.
11 2Y2 output Open-collector output 2 of section 2.
12 2Y3 output Open-collector output 3 of section 2.
13 A input Binary-address select input common to both sections.
14 2G input Active-low strobe (enable) input for section 2.
15 2C input Active-low data input for section 2; data applied at 2C is not inverted through its outputs.
16 VCC power_in Positive supply voltage.

Key specifications

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

CAD (KiCad official)

  • Symbol: SN74LS156NSR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SO-16 (KiCad packages3D, STEP)
  • 3D model files: sn74ls156nsr-etched.step / sn74ls156nsr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ls156nsr.step / sn74ls156nsr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (22 pp, sha256 893a930eaec60d8f, retrieved 2026-10-08, tier: lcsc)
  • 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