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SN74HC157N
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN74HC157N
Texas Instruments · Signal Switches, Multiplexers, Decoders · DIP-16
SN74HC157N from Texas Instruments, in a DIP-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 | Address select input; selects data input A (low) or B (high) for all multiplexer channels |
| 2 | 1A | input | Channel 1 data input A to multiplexer |
| 3 | 1B | input | Channel 1 data input B to multiplexer |
| 4 | 1Y | output | Channel 1 multiplexer output; driven by selected input (1A or 1B), forced low when G is high |
| 5 | 2A | input | Channel 2 data input A to multiplexer |
| 6 | 2B | input | Channel 2 data input B to multiplexer |
| 7 | 2Y | output | Channel 2 multiplexer output; driven by selected input (2A or 2B), forced low when G is high |
| 8 | GND | power_in | Ground, 0V reference |
| 9 | 3Y | output | Channel 3 multiplexer output; driven by selected input (3A or 3B), forced low when G is high |
| 10 | 3B | input | Channel 3 data input B to multiplexer |
| 11 | 3A | input | Channel 3 data input A to multiplexer |
| 12 | 4Y | output | Channel 4 multiplexer output; driven by selected input (4A or 4B), forced low when G is high |
| 13 | 4B | input | Channel 4 data input B to multiplexer |
| 14 | 4A | input | Channel 4 data input A to multiplexer |
| 15 | G | input | Output strobe input, active low; forces all Y outputs to low when high, enables multiplexing when low |
| 16 | VCC | power_in | Positive power supply; 2V to 6V operating range |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | DIP-16 |
| Category | Logic |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN74HC157N - Footprint:
Package_DIP:DIP-16_W7.62mm - 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files:
sn74hc157n-etched.step/sn74hc157n-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hc157n.step/sn74hc157n.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
79d472747213db2e, retrieved 2026-10-03, 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).