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SN74AHCT1G125DCKR

Public Made by Adom

by adom

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

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs sn74ahct1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
package.json Publish 0.2.0 · Ray 2mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 1mo ago
README.md sn74ahct1g125dckr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago
sn74ahct1g125dckr-etched.fit.json sn74ahct1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
sn74ahct1g125dckr-etched.glb sn74ahct1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
sn74ahct1g125dckr-etched.step sn74ahct1g125dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
sn74ahct1g125dckr.glb Publish 0.1.0 · Ray 2mo ago
sn74ahct1g125dckr.kicad_mod Publish 0.1.0 · Ray 2mo ago
sn74ahct1g125dckr.kicad_sym Publish 0.1.0 · Ray 2mo ago
sn74ahct1g125dckr.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray 2mo ago
sn74ahct1g125dckr.step Publish 0.1.0 · Ray 2mo ago

SN74AHCT1G125DCKR

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

SN74AHCT1G125DCKR 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 a high-impedance (3-state) condition. Should be tied to VCC through a pull-up resistor during power up/down to ensure high-Z state.
2 A input Buffer data input. TTL-compatible input (VIH min 2 V, VIL max 0.8 V at VCC = 4.5-5.5 V). Driven to output Y when OE is asserted low.
3 GND power_in Ground reference (0 V) for the device.
4 Y tri_state 3-state buffer output. Drives ±8 mA at VCC = 5 V; high-impedance when OE is high. Follows A when OE is low.
5 VCC power_in Positive supply voltage input. Recommended operating range 4.5 V to 5.5 V; absolute maximum 7 V. Typical ICC 10 µA max.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • SN74AHCT1G125DCKR
  • SN74AHCT1G125DCKRDCKT
  • SN74AHCT1G125DCKRDBVR
  • SN74AHCT1G125DCKRDBVT
  • SN74AHCT1G125DCKRDRLR

CAD (KiCad official)

  • Symbol: SN74AHCT1G125DCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: sn74ahct1g125dckr-etched.step / sn74ahct1g125dckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahct1g125dckr.step / sn74ahct1g125dckr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sn74ahct1g125dckr.step 87 KB You want the bare part, or you mark your own boards.
sn74ahct1g125dckr-etched.step 2.7 MB You want the part with SN74AHCT1G125DCKR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 671 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 (26 pp, sha256 dbaf49b3af33690f, 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