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SN74HCT139PWR

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

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Contents

README

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SN74HCT139PWR

Texas Instruments · Signal Switches, Multiplexers, Decoders · TSSOP-16

SN74HCT139PWR 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 Active-low enable input for decoder 1; when driven high, all four outputs of decoder 1 are forced high regardless of select inputs A and B; TTL-compatible, VIH ≥ 2 V, VIL ≤ 0.8 V, max input leakage ±1000 nA.
2 1A input Select input A for decoder 1; TTL-compatible address line, VIH ≥ 2 V, VIL ≤ 0.8 V, max input leakage ±1000 nA at VCC = 5.5 V.
3 1B input Select input B for decoder 1; TTL-compatible address line, VIH ≥ 2 V, VIL ≤ 0.8 V, max input leakage ±1000 nA at VCC = 5.5 V.
4 1Y0 output Active-low decoded output Y0 for decoder 1; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
5 1Y1 output Active-low decoded output Y1 for decoder 1; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
6 1Y2 output Active-low decoded output Y2 for decoder 1; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
7 1Y3 output Active-low decoded output Y3 for decoder 1; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
8 GND power_in Ground reference; continuous current through GND pin must not exceed ±50 mA absolute maximum.
9 2Y3 output Active-low decoded output Y3 for decoder 2; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
10 2Y2 output Active-low decoded output Y2 for decoder 2; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
11 2Y1 output Active-low decoded output Y1 for decoder 2; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
12 2Y0 output Active-low decoded output Y0 for decoder 2; VOL ≤ 0.33 V at IOL = 4 mA, VOH ≥ 3.84 V at IOH = −4 mA, can drive up to 10 LSTTL loads, typical tpd = 10 ns.
13 2B input Select input B for decoder 2; TTL-compatible address line, VIH ≥ 2 V, VIL ≤ 0.8 V, max input leakage ±1000 nA at VCC = 5.5 V.
14 2A input Select input A for decoder 2; TTL-compatible address line, VIH ≥ 2 V, VIL ≤ 0.8 V, max input leakage ±1000 nA at VCC = 5.5 V.
15 2G input Active-low enable input for decoder 2; when driven high, all four outputs of decoder 2 are forced high regardless of select inputs; may be used as a data line in demultiplexing applications.
16 VCC power_in Positive supply voltage; recommended operating range 4.5 V to 5.5 V (nom 5 V); absolute maximum −0.5 V to 7 V; continuous current must not exceed ±50 mA; decouple with 0.1 µF as close to pin as possible.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-16
Category Logic
Pins 16

CAD (KiCad official)

  • Symbol: SN74HCT139PWR
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: sn74hct139pwr-etched.step / sn74hct139pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hct139pwr.step / sn74hct139pwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (23 pp, sha256 367dcf638b4ba4e2, retrieved 2026-09-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-sonnet-4-6 (text+vision), consensus claude-opus-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