component

Texas Instruments SN74HCT157DR

Public Unreviewed

by Glenn Jones

Quad 2-to-1 data selector/multiplexer, HCT (TTL-compatible inputs, 5 V), SOIC-16.

componentictexas-instrumentssoic-16logic
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
screenshots Set hero asset · Glenn Jones 4d ago
hero.png 3D model and hero render · Glenn Jones 4d ago
LICENSE Add footprint, symbol, STEP, lbr and metadata (LEDster-TI parts) · Glenn Jones 7d ago
page.json Set visibility: public · Glenn Jones 4d ago
README.md Add footprint, symbol, STEP, lbr and metadata (LEDster-TI parts) · Glenn Jones 7d ago
sn74hct157dr.glb 3D model and hero render · Glenn Jones 4d ago
sn74hct157dr.kicad_mod Add footprint, symbol, STEP, lbr and metadata (LEDster-TI parts) · Glenn Jones 7d ago
sn74hct157dr.kicad_sym Add footprint, symbol, STEP, lbr and metadata (LEDster-TI parts) · Glenn Jones 7d ago
sn74hct157dr.lbr Add footprint, symbol, STEP, lbr and metadata (LEDster-TI parts) · Glenn Jones 7d ago
sn74hct157dr.step Add footprint, symbol, STEP, lbr and metadata (LEDster-TI parts) · Glenn Jones 7d ago

Texas Instruments SN74HCT157DR

Quad 2-to-1 data selector/multiplexer, HCT (TTL-compatible inputs, 5 V), SOIC-16.
Manufacturer Texas Instruments
MPN SN74HCT157DR
Category ic (Logic: quad 2:1 multiplexer (HCT))
Package SOIC-16 (D), 3.9 x 9.9 mm, 1.27 mm pitch
DigiKey 296-31835-2-ND
Mouser 595-SN74HCT157DR
LCSC C6771
Datasheet sn74hct157.pdf

Distributor numbers and stock from the LEDster-TI BOM, checked 2026-11-02: DigiKey 296-31835-2-ND (stock 10050), Mouser 595-SN74HCT157DR (stock 5165), LCSC C6771 (stock 2607).

Files

  • sn74hct157dr.kicad_mod footprint (KiCad)
  • sn74hct157dr.kicad_sym symbol (KiCad)
  • sn74hct157dr.step 3D model (STEP, Z-up, seated on z = 0, centred on the footprint origin)
  • sn74hct157dr.lbr Fusion / EAGLE library part (adom-lbr from the files above with this page's metadata; no embedded 3D, bind the STEP)

Provenance

  • sn74hct157dr.kicad_mod: KiCad Package_SO:SOIC-16_3.9x9.9mm_P1.27mm footprint (https://gitlab.com/kicad/libraries/kicad-footprints/-/raw/master/Package_SO.pretty/SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod), unmodified except the 3D model path (now sn74hct157dr.step). sha256/16 of the original: f9b5075740f7816c.
  • sn74hct157dr.step: KiCad Package_SO.3dshapes/SOIC-16_3.9x9.9mm_P1.27mm.step (packages3D), byte-identical copy (sha256/16 d5eeddb4c0b304dc). The footprint's (model (offset 0 0 0) (rotate 0 0 0)), so the STEP is already in the footprint frame and no transform was applied. Checked with OpenCascade (step2glb features): Z-up, seated on the board plane, origin = footprint origin.
  • Upstream terms: KiCad official library (gitlab.com/kicad/libraries/kicad-footprints, kicad-packages3D and kicad-symbols, master, fetched 2026-11-02). License: CC-BY-SA 4.0 with the KiCad libraries exception (using these files in a design, and distributing the design or its manufacturing output, does not require the design to be licensed under CC-BY-SA). The STEP is KiCad's generic body for this package, not a manufacturer model.
  • sn74hct157dr.kicad_sym: KiCad 74xx:74LS157 (https://gitlab.com/kicad/libraries/kicad-symbols/-/raw/master/74xx.kicad_symdir/74LS157.kicad_sym). The KiCad library has no 74HCT157 symbol; the 74LS157 has the identical 16-pin function pinout. Renamed to the MPN, pin numbers 1-16 unchanged, pin names changed to the TI datasheet names (SCLS071D p.1: A/B, 1A..4A, 1B..4B, 1Y..4Y, G, VCC, GND).

License

Adom-authored content CC-BY-4.0; third-party files keep their upstream terms (see LICENSE).