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SN74LVC2G157DCU3

Texas Instruments · Signal Switches, Multiplexers, Decoders · VSSOP-8-0.5mm

SN74LVC2G157DCU3 from Texas Instruments, in a VSSOP-8-0.5mm. 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 A input Data input A; the datasheet gives the input voltage range as 0 V to 5.5 V.
2 B input Data input B; the datasheet gives the input voltage range as 0 V to 5.5 V.
3 Y output Inverted output (complement of Y, shown as Y-bar in the datasheet, which the text extraction drops); when the strobe G is high this output is high. Output voltage is limited to 0 V to VCC.
4 GND power_in Ground reference for the device.
5 Y output True data output; when the strobe G is high this output is low. Output voltage is limited to 0 V to VCC.
6 A/B input Selector input that chooses between data input A and data input B when the strobe G is low; input voltage range is 0 V to 5.5 V.
7 G input Common active-high strobe input; when high it forces Y low and the inverted output high, and when low the selected input is passed to the outputs. Input voltage range is 0 V to 5.5 V.
8 VCC power_in Positive supply; operating range is 1.65 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-8-0.5mm
Category Logic
Pins 8

CAD (KiCad official)

  • Symbol: SN74LVC2G157DCU3
  • Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
  • 3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)
  • 3D model files: sn74lvc2g157dcu3-etched.step / sn74lvc2g157dcu3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lvc2g157dcu3.step / sn74lvc2g157dcu3.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (28 pp, sha256 d8feceb35335bfbc, retrieved 2026-10-08, 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-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