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SN74AHCT139PWR
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, TSSOP-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
markdownSN74AHCT139PWR
Texas Instruments · Signal Switches, Multiplexers, Decoders · TSSOP-16
SN74AHCT139PWR from Texas Instruments, in a TSSOP-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 | 1G | input | Enable input for decoder 1 (active low); when high, all outputs held high; must be held to VCC or GND |
| 2 | 1A | input | Select input A for decoder 1; LSB of select code (with 1B) for active output when 1G is low; must be held to VCC or GND |
| 3 | 1B | input | Select input B for decoder 1; MSB of select code (with 1A) for active output when 1G is low; must be held to VCC or GND |
| 4 | 1Y0 | output | Output 0 for decoder 1 (active low); goes low when 1G is low and select code (1B:1A) = 00 |
| 5 | 1Y1 | output | Output 1 for decoder 1 (active low); goes low when 1G is low and select code (1B:1A) = 01 |
| 6 | 1Y2 | output | Output 2 for decoder 1 (active low); goes low when 1G is low and select code (1B:1A) = 10 |
| 7 | 1Y3 | output | Output 3 for decoder 1 (active low); goes low when 1G is low and select code (1B:1A) = 11 |
| 8 | GND | power_in | Ground connection; 0V reference for device operation |
| 9 | 2Y3 | output | Output 3 for decoder 2 (active low); goes low when 2G is low and select code (2B:2A) = 11 |
| 10 | 2Y2 | output | Output 2 for decoder 2 (active low); goes low when 2G is low and select code (2B:2A) = 10 |
| 11 | 2Y1 | output | Output 1 for decoder 2 (active low); goes low when 2G is low and select code (2B:2A) = 01 |
| 12 | 2Y0 | output | Output 0 for decoder 2 (active low); goes low when 2G is low and select code (2B:2A) = 00 |
| 13 | 2B | input | Select input B for decoder 2; MSB of select code (with 2A) for active output when 2G is low; must be held to VCC or GND |
| 14 | 2A | input | Select input A for decoder 2; LSB of select code (with 2B) for active output when 2G is low; must be held to VCC or GND |
| 15 | 2G | input | Enable input for decoder 2 (active low); when high, all outputs held high; must be held to VCC or GND |
| 16 | VCC | power_out | Power supply voltage input; 4.5V to 5.5V; provides positive power to device |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Logic |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN74AHCT139PWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
sn74ahct139pwr-etched.step/sn74ahct139pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ahct139pwr.step/sn74ahct139pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (20 pp, sha256
e75cb61da2840c39, retrieved 2026-09-24, tier: manufacturer) - 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).