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74HC139M

Public Made by Adom

by adom

HGSEMI Signal Switches / Encoders & Decoders / Multiplexers, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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74HC139M

HGSEMI · Signal Switches / Encoders & Decoders / Multiplexers · SOP-16

74HC139M from HGSEMI, in a SOP-16. 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 SELECTa input Active-low select/enable input for decoder A. When low, outputs Y0a-Y3a follow the A0a/A1a address inputs. When high, all outputs of decoder A are forced high.
2 A0a input Address input bit 0 for decoder A. Together with A1a, selects which of the four active-low Y0a-Y3a outputs is asserted when SELECTa is low.
3 A1a input Address input bit 1 for decoder A. Together with A0a, selects which of the four active-low Y0a-Y3a outputs is asserted when SELECTa is low.
4 Y0a output Active-low decoded output 0 of decoder A. Asserted low when A1a=0, A0a=0, and SELECTa is low; otherwise high.
5 Y1a output Active-low decoded output 1 of decoder A. Asserted low when A1a=0, A0a=1, and SELECTa is low; otherwise high.
6 Y2a output Active-low decoded output 2 of decoder A. Asserted low when A1a=1, A0a=0, and SELECTa is low; otherwise high.
7 Y3a output Active-low decoded output 3 of decoder A. Asserted low when A1a=1, A0a=1, and SELECTa is low; otherwise high.
8 GND power_in Ground reference (0 V) for the device.
9 Y3b output Active-low decoded output 3 of decoder B. Asserted low when A1b=1, A0b=1, and SELECTb is low; otherwise high.
10 Y2b output Active-low decoded output 2 of decoder B. Asserted low when A1b=1, A0b=0, and SELECTb is low; otherwise high.
11 Y1b output Active-low decoded output 1 of decoder B. Asserted low when A1b=0, A0b=1, and SELECTb is low; otherwise high.
12 Y0b output Active-low decoded output 0 of decoder B. Asserted low when A1b=0, A0b=0, and SELECTb is low; otherwise high.
13 A1b input Address input bit 1 for decoder B. Together with A0b, selects which of the four active-low Y0b-Y3b outputs is asserted when SELECTb is low.
14 A0b input Address input bit 0 for decoder B. Together with A1b, selects which of the four active-low Y0b-Y3b outputs is asserted when SELECTb is low.
15 SELECTb input Active-low select/enable input for decoder B. When low, outputs Y0b-Y3b follow the A0b/A1b address inputs. When high, all outputs of decoder B are forced high.
16 VCC power_in Positive supply voltage input. Operating range 2.0 V to 5.0 V (absolute max -0.5 V to +7.0 V).

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-16
Category Logic
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • 74HC139MM/TR
  • 74HC139MN
  • 74HC139MMT/TR

CAD (KiCad official)

  • Symbol: 74HC139M
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: 74hc139m-etched.step / 74hc139m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74hc139m.step / 74hc139m.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (10 pp, sha256 7bc94cd2ebcfa7d9, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF