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SN74HC157DBR

Public Made by Adom

by adom

Texas Instruments Signal Switches, Multiplexers, Decoders, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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SN74HC157DBR

Texas Instruments · Signal Switches, Multiplexers, Decoders · SSOP-16-208mil

SN74HC157DBR from Texas Instruments, in a SSOP-16-208mil. 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 Address select input for choosing between data sources A or B for all four channels
2 1A input Channel 1 data input A
3 1B input Channel 1 data input B
4 1Y output Channel 1 data output, equals selected input A or B per A/B control
5 2A input Channel 2 data input A
6 2B input Channel 2 data input B
7 2Y output Channel 2 data output, equals selected input A or B per A/B control
8 GND power_in Ground connection
9 3Y output Channel 3 data output, equals selected input A or B per A/B control
10 3B input Channel 3 data input B
11 3A input Channel 3 data input A
12 4Y output Channel 4 data output, equals selected input A or B per A/B control
13 4B input Channel 4 data input B
14 4A input Channel 4 data input A
15 G input Output strobe/enable input, forces all Y outputs to low level when high to disable outputs
16 VCC power_in Positive power supply, recommended 2V to 6V operating range

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-16-208mil
Category Logic
Pins 16

CAD (KiCad official)

  • Symbol: SN74HC157DBR
  • Footprint: Package_SO:SSOP-16_5.3x6.2mm_P0.65mm
  • 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
  • 3D model files: sn74hc157dbr-etched.step / sn74hc157dbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hc157dbr.step / sn74hc157dbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 c525a639e5642b49, retrieved 2026-10-05, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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