component
CD74HCT138M
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-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
markdownCD74HCT138M
Texas Instruments · Signal Switches, Multiplexers, Decoders · SOIC-16
CD74HCT138M 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 | A0 | input | Address select input bit 0 |
| 2 | A1 | input | Address select input bit 1 |
| 3 | A2 | input | Address select input bit 2 |
| 4 | G0 | input | Active-low output strobe 0; all outputs disabled when high |
| 5 | G1 | input | Active-low output strobe 1; all outputs disabled when high |
| 6 | G2 | input | Active-high output strobe 2; enables decoder when high |
| 7 | Y7 | output | Active-low decoder output 7 |
| 8 | GND | power_in | Ground (0V reference) |
| 9 | Y6 | output | Active-low decoder output 6 |
| 10 | Y5 | output | Active-low decoder output 5 |
| 11 | Y4 | output | Active-low decoder output 4 |
| 12 | Y3 | output | Active-low decoder output 3 |
| 13 | Y2 | output | Active-low decoder output 2 |
| 14 | Y1 | output | Active-low decoder output 1 |
| 15 | Y0 | output | Active-low decoder output 0 |
| 16 | VCC | power_in | Positive supply voltage |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Logic |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
CD74HCT138M - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
cd74hct138m-etched.step/cd74hct138m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd74hct138m.step/cd74hct138m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
c85a0d6e0b77375a, 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).