component

SM74HC138D

Public Unreviewed

by Ray

Shenzhen Sunmoon Micro Signal Switches / Encoders & Decoders / Multiplexers, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentlogicsm74hc138d
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

PCB Footprint

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Datasheet

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Download PDF
Contents

README

markdown

SM74HC138D

Shenzhen Sunmoon Micro · Signal Switches / Encoders & Decoders / Multiplexers · SOP-16

SM74HC138D from Shenzhen Sunmoon Micro, 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 A0 input Address select input bit 0 (LSB). CMOS logic level input used to select one of eight outputs.
2 A1 input Address select input bit 1. CMOS logic level input used to select one of eight outputs.
3 A2 input Address select input bit 2 (MSB). CMOS logic level input used to select one of eight outputs.
4 ~E1 input Active-low enable input 1. Must be low for outputs to be enabled.
5 ~E2 input Active-low enable input 2. Must be low for outputs to be enabled.
6 E3 input Active-high enable input 3. Must be high for outputs to be enabled.
7 ~Y7 output Active-low decoded output 7. Asserted low when A2:A0 = 111 and all enables are active.
8 GND power_in Ground reference (0V).
9 ~Y6 output Active-low decoded output 6. Asserted low when A2:A0 = 110 and all enables are active.
10 ~Y5 output Active-low decoded output 5. Asserted low when A2:A0 = 101 and all enables are active.
11 ~Y4 output Active-low decoded output 4. Asserted low when A2:A0 = 100 and all enables are active.
12 ~Y3 output Active-low decoded output 3. Asserted low when A2:A0 = 011 and all enables are active.
13 ~Y2 output Active-low decoded output 2. Asserted low when A2:A0 = 010 and all enables are active.
14 ~Y1 output Active-low decoded output 1. Asserted low when A2:A0 = 001 and all enables are active.
15 ~Y0 output Active-low decoded output 0. Asserted low when A2:A0 = 000 and all enables are active.
16 VCC power_in Positive supply voltage, 2V to 6V operating range.

Key specifications

Parameter Value
Manufacturer Shenzhen Sunmoon Micro
Package SOP-16
Category Logic
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • SM74HC138DD

CAD (KiCad official)

  • Symbol: SM74HC138D
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Shenzhen Sunmoon Micro datasheet (7 pp, sha256 6de4b0e29514fe30, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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