component

SN74AHC1G125DCKR

Public Made by Adom

by adom

Texas Instruments Buffer/Driver/Transceiver, SC-70-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentlogicsn74ahc1g125dckr
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs sn74ahc1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md sn74ahc1g125dckr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 17d ago
sn74ahc1g125dckr-etched.fit.json sn74ahc1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
sn74ahc1g125dckr-etched.glb sn74ahc1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
sn74ahc1g125dckr-etched.step sn74ahc1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
sn74ahc1g125dckr.glb Publish 0.1.0 · Ray 1mo ago
sn74ahc1g125dckr.kicad_mod Publish 0.1.0 · Ray 1mo ago
sn74ahc1g125dckr.kicad_sym Publish 0.1.0 · Ray 1mo ago
sn74ahc1g125dckr.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 5 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
sn74ahc1g125dckr.step Publish 0.1.0 · Ray 1mo ago

SN74AHC1G125DCKR

Texas Instruments · Buffer/Driver/Transceiver · SC-70-5

SN74AHC1G125DCKR from Texas Instruments, in a SC-70-5. 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 OE input Active-low output enable. When OE is low, the buffer passes A to Y; when OE is high, the Y output is placed in the high-impedance (3-state) condition. Input voltage range 0 V to 5.5 V; VIH = 2.1 V min at VCC = 3 V, 3.85 V min at VCC = 5.5 V.
2 A input Buffer data input. Data at A is passed through to Y when OE is low. Input voltage range 0 V to 5.5 V; input leakage ±1 µA max. Unused inputs must be tied to VCC or GND.
3 GND power_in Device ground reference (0 V). Return for VCC supply and all logic signals.
4 Y tri_state 3-state buffer output. Drives the buffered A signal when OE is low; high-impedance when OE is high. ±8 mA drive at VCC = 4.5 V (±4 mA at 3 V, ±50 µA at 2 V). Off-state leakage (IOZ) ±2.5 µA max.
5 VCC power_in Positive supply voltage. Recommended operating range 2 V to 5.5 V. Supply current ICC = 10 µA max (1 µA typ at 25 °C). Bypass with a local decoupling capacitor to GND.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SC-70-5
Category Logic
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • SN74AHC1G125DCKR
  • SN74AHC1G125DCKRDCKT
  • SN74AHC1G125DCKRDBVR
  • SN74AHC1G125DCKRDBVT
  • SN74AHC1G125DCKRDRLR

CAD (KiCad official)

  • Symbol: SN74AHC1G125DCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: sn74ahc1g125dckr-etched.step / sn74ahc1g125dckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahc1g125dckr.step / sn74ahc1g125dckr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sn74ahc1g125dckr.step 87 KB You want the bare part, or you mark your own boards.
sn74ahc1g125dckr-etched.step 2.6 MB You want the part with SN74AHC1G125DCKR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 652 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Texas Instruments datasheet (27 pp, sha256 052d22c81db989f4, retrieved 2026-08-17, tier: manufacturer)
  • 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