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CD74HC154M

Public Made by Adom

by adom

Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-24-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CD74HC154M

Texas Instruments · Signal Switches, Multiplexers, Decoders · SOIC-24-300mil

CD74HC154M from Texas Instruments, in a SOIC-24-300mil. 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 Y0 output Active-low decoded output 0, driven low when address A3-A0 = 0000 and both enables are low.
2 Y1 output Active-low decoded output 1, driven low when address A3-A0 = 0001 and both enables are low.
3 Y2 output Active-low decoded output 2, driven low when address A3-A0 = 0010 and both enables are low.
4 Y3 output Active-low decoded output 3, driven low when address A3-A0 = 0011 and both enables are low.
5 Y4 output Active-low decoded output 4, driven low when address A3-A0 = 0100 and both enables are low.
6 Y5 output Active-low decoded output 5, driven low when address A3-A0 = 0101 and both enables are low.
7 Y6 output Active-low decoded output 6, driven low when address A3-A0 = 0110 and both enables are low.
8 Y7 output Active-low decoded output 7, driven low when address A3-A0 = 0111 and both enables are low.
9 Y8 output Active-low decoded output 8, driven low when address A3-A0 = 1000 and both enables are low.
10 Y9 output Active-low decoded output 9, driven low when address A3-A0 = 1001 and both enables are low.
11 Y10 output Active-low decoded output 10, driven low when address A3-A0 = 1010 and both enables are low.
12 GND power_in Ground (0 V) reference pin.
13 Y11 output Active-low decoded output 11, driven low when address A3-A0 = 1011 and both enables are low.
14 Y12 output Active-low decoded output 12, driven low when address A3-A0 = 1100 and both enables are low.
15 Y13 output Active-low decoded output 13, driven low when address A3-A0 = 1101 and both enables are low.
16 Y14 output Active-low decoded output 14, driven low when address A3-A0 = 1110 and both enables are low.
17 Y15 output Active-low decoded output 15, driven low when address A3-A0 = 1111 and both enables are low.
18 E1 input Enable input 1; a high level forces all outputs high, and it can serve as the data input for demultiplexing while E2 is held low.
19 E2 input Enable input 2; a high level forces all outputs high, and it can serve as the data input for demultiplexing while E1 is held low.
20 A3 input Address select input A3 (most significant bit) selecting one of outputs Y0 to Y15.
21 A2 input Address select input A2 selecting one of outputs Y0 to Y15.
22 A1 input Address select input A1 selecting one of outputs Y0 to Y15.
23 A0 input Address select input A0 (least significant bit) selecting one of outputs Y0 to Y15.
24 VCC power_in Positive supply; 2V to 6V for HC types, with absolute maximum of 7V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-24-300mil
Category Logic
Pins 24

CAD (KiCad official)

  • Symbol: CD74HC154M
  • Footprint: Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm
  • 3D model: SOIC-24-300mil (KiCad packages3D, STEP)
  • 3D model files: cd74hc154m-etched.step / cd74hc154m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cd74hc154m.step / cd74hc154m.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (14 pp, sha256 280e5cce6eb56861, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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