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74HC238D

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by Ray

Nexperia Signal Switches / Encoders & Decoders / Multiplexers, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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74HC238D

Nexperia · Signal Switches / Encoders & Decoders / Multiplexers · SOIC-16

74HC238D from Nexperia, in a SOIC-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 A0 input Address input bit 0 (LSB). CMOS input; contributes to selecting one of eight outputs.
2 A1 input Address input bit 1. CMOS input; contributes to selecting one of eight outputs.
3 A2 input Address input bit 2 (MSB). CMOS input; contributes to selecting one of eight outputs.
4 E1 input Enable input 1, active LOW. Both E1 and E2 must be LOW (and E3 HIGH) for a selected output to go HIGH; otherwise all outputs are LOW.
5 E2 input Enable input 2, active LOW. Both E1 and E2 must be LOW (and E3 HIGH) for a selected output to go HIGH.
6 E3 input Enable input 3, active HIGH. Must be HIGH (with E1 and E2 LOW) to enable outputs; can be used as the data input in demultiplexer mode.
7 Y7 output Decoded output 7 (active HIGH). Selected when A2:A0 = 111 and the chip is enabled; otherwise LOW.
8 GND power_in Ground reference (0 V).
9 Y6 output Decoded output 6 (active HIGH). Selected when A2:A0 = 110 and the chip is enabled; otherwise LOW.
10 Y5 output Decoded output 5 (active HIGH). Selected when A2:A0 = 101 and the chip is enabled; otherwise LOW.
11 Y4 output Decoded output 4 (active HIGH). Selected when A2:A0 = 100 and the chip is enabled; otherwise LOW.
12 Y3 output Decoded output 3 (active HIGH). Selected when A2:A0 = 011 and the chip is enabled; otherwise LOW.
13 Y2 output Decoded output 2 (active HIGH). Selected when A2:A0 = 010 and the chip is enabled; otherwise LOW.
14 Y1 output Decoded output 1 (active HIGH). Selected when A2:A0 = 001 and the chip is enabled; otherwise LOW.
15 Y0 output Decoded output 0 (active HIGH). Selected when A2:A0 = 000 and the chip is enabled; otherwise LOW.
16 VCC power_in Supply voltage. Operating range 2.0 V to 6.0 V (74HC238); 4.5 V to 5.5 V (74HCT238).

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOIC-16
Category Logic
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • 74HC238DD
  • 74HC238DPW
  • 74HC238DBQ

CAD (KiCad official)

  • Symbol: 74HC238D
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Nexperia datasheet (15 pp, sha256 f0f9b99563a06c78, retrieved 2026-08-17, tier: manufacturer)
  • 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