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SN74AHC139DBR
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, SSOP-16-208mil. Datasheet-verified pinout, 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
markdownSN74AHC139DBR
Texas Instruments · Signal Switches, Multiplexers, Decoders · SSOP-16-208mil
SN74AHC139DBR from Texas Instruments, in a SSOP-16-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1G | input | Channel 1 output enable input, active low; enables the 1-of-4 decoder when driven low |
| 2 | 1A0 | input | Channel 1 address select input 0, LSB; with 1A1 selects which of four outputs is driven active-low |
| 3 | 1A1 | input | Channel 1 address select input 1, MSB; with 1A0 selects which of four outputs is driven active-low |
| 4 | 1Y0 | tri_state | Channel 1 output 0, active-low tri-state; selected when 1G=L, A1=0, A0=0 |
| 5 | 1Y1 | tri_state | Channel 1 output 1, active-low tri-state; selected when 1G=L, A1=0, A0=1 |
| 6 | 1Y2 | tri_state | Channel 1 output 2, active-low tri-state; selected when 1G=L, A1=1, A0=0 |
| 7 | 1Y3 | tri_state | Channel 1 output 3, active-low tri-state; selected when 1G=L, A1=1, A0=1 |
| 8 | GND | power_in | Ground; reference voltage, return path for device current |
| 9 | 2Y3 | tri_state | Channel 2 output 3, active-low tri-state; selected when 2G=L, A1=1, A0=1 |
| 10 | 2Y2 | tri_state | Channel 2 output 2, active-low tri-state; selected when 2G=L, A1=1, A0=0 |
| 11 | 2Y1 | tri_state | Channel 2 output 1, active-low tri-state; selected when 2G=L, A1=0, A0=1 |
| 12 | 2Y0 | tri_state | Channel 2 output 0, active-low tri-state; selected when 2G=L, A1=0, A0=0 |
| 13 | 2A1 | input | Channel 2 address select input 1, MSB; with 2A0 selects which of four outputs is driven active-low |
| 14 | 2A0 | input | Channel 2 address select input 0, LSB; with 2A1 selects which of four outputs is driven active-low |
| 15 | 2G | input | Channel 2 output enable input, active low; enables the 1-of-4 decoder when driven low |
| 16 | VCC | power_in | Positive power supply; 2V to 5.5V operating range, source for device operation |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-208mil |
| Category | Logic |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN74AHC139DBR - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files:
sn74ahc139dbr-etched.step/sn74ahc139dbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ahc139dbr.step/sn74ahc139dbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
6e8cf3bc43f5ae7a, retrieved 2026-09-23, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).