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SN74HC253DBR

Public Made by Adom

by adom

Texas Instruments Signal Switches, Multiplexers, Decoders, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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docs sn74hc253dbr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
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README.md Initial commit: component/sn74hc253dbr · Ray 4d ago
sn74hc253dbr-etched.fit.json sn74hc253dbr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
sn74hc253dbr-etched.glb sn74hc253dbr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
sn74hc253dbr-etched.step sn74hc253dbr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
sn74hc253dbr.glb Publish 0.1.0 · Ray 4d ago
sn74hc253dbr.kicad_mod Publish 0.1.0 · Ray 4d ago
sn74hc253dbr.kicad_sym Publish 0.1.0 · Ray 4d ago
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sn74hc253dbr.step Publish 0.1.0 · Ray 4d ago

SN74HC253DBR

Texas Instruments · Signal Switches, Multiplexers, Decoders · SSOP-16-208mil

SN74HC253DBR from Texas Instruments, in a SSOP-16-208mil. 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 1OE input Active-low output enable for section 1; outputs 1Y high-impedance when 1OE is high.
2 B input Select input B (MSB), common to both multiplexer sections.
3 1C3 input Data input 3 of section 1 multiplexer.
4 1C2 input Data input 2 of section 1 multiplexer.
5 1C1 input Data input 1 of section 1 multiplexer.
6 1C0 input Data input 0 of section 1 multiplexer.
7 1Y tri_state Three-state output of section 1 multiplexer, high-impedance when 1OE is high.
8 GND power_in Ground.
9 2Y tri_state Three-state output of section 2 multiplexer, high-impedance when 2OE is high.
10 2C0 input Data input 0 of section 2 multiplexer.
11 2C1 input Data input 1 of section 2 multiplexer.
12 2C2 input Data input 2 of section 2 multiplexer.
13 2C3 input Data input 3 of section 2 multiplexer.
14 A input Select input A (LSB), common to both multiplexer sections.
15 2OE input Active-low output enable for section 2; outputs 2Y high-impedance when 2OE is high.
16 VCC power_in Supply voltage, 2 V to 6 V recommended, with a 0.1-µF bypass capacitor recommended close to the pin.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-16-208mil
Category Logic
Pins 16

CAD (KiCad official)

  • Symbol: SN74HC253DBR
  • Footprint: Package_SO:SSOP-16_5.3x6.2mm_P0.65mm
  • 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
  • 3D model files: sn74hc253dbr-etched.step / sn74hc253dbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hc253dbr.step / sn74hc253dbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (29 pp, sha256 ffababeb788ab721, retrieved 2026-10-01, 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (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