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Name Last commit message Last updated
docs sn74ahc1g00dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d 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 sn74ahc1g00dckr: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 22h ago
README.md sn74ahc1g00dckr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 19d ago
sn74ahc1g00dckr-etched.fit.json sn74ahc1g00dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
sn74ahc1g00dckr-etched.glb sn74ahc1g00dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
sn74ahc1g00dckr-etched.step sn74ahc1g00dckr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
sn74ahc1g00dckr.glb Publish 0.1.0 · Ray 1mo ago
sn74ahc1g00dckr.kicad_mod Publish 0.1.0 · Ray 1mo ago
sn74ahc1g00dckr.kicad_sym Publish 0.1.0 · Ray 1mo ago
sn74ahc1g00dckr.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
sn74ahc1g00dckr.step Publish 0.1.0 · Ray 1mo ago

SN74AHC1G00DCKR

Texas Instruments · Gates · SC-70-5

SN74AHC1G00DCKR 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 A input NAND gate logic input A. CMOS Schmitt-trigger input, overvoltage tolerant to 5.5 V regardless of VCC. Unused inputs must be tied to VCC or GND.
2 B input NAND gate logic input B. CMOS Schmitt-trigger input, overvoltage tolerant to 5.5 V regardless of VCC. Unused inputs must be tied to VCC or GND.
3 GND power_in Ground reference (0 V) for the device.
4 Y output NAND gate output, Y = NOT(A AND B). Totem-pole CMOS output rated for +/-8 mA drive at VCC = 5 V (+/-4 mA at 3.3 V). Load current must not exceed 25 mA per output and 50 mA total for the part; do not pull above VCC.
5 VCC power_in Positive supply, 2 V to 5.5 V recommended (absolute max 7 V). Bypass locally with a 0.1 uF ceramic 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.

  • SN74AHC1G00DCKR
  • SN74AHC1G00DCKRDCKT
  • SN74AHC1G00DCKRDBVR
  • SN74AHC1G00DCKRDBVT
  • SN74AHC1G00DCKRDRLR

CAD (KiCad official)

  • Symbol: SN74AHC1G00DCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: sn74ahc1g00dckr-etched.step / sn74ahc1g00dckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahc1g00dckr.step / sn74ahc1g00dckr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sn74ahc1g00dckr.step 87 KB You want the bare part, or you mark your own boards.
sn74ahc1g00dckr-etched.step 2.6 MB You want the part with SN74AHC1G00DCKR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 645 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 (28 pp, sha256 a36352df5fcce3eb, 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