74AHCT1G125SE-7 from Diodes Incorporated, in a SOT-353. 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 LOW, the buffer passes A to Y; when HIGH, output Y goes to high-impedance (Z) state. Schmitt-trigger input; VIH = 2.0 V min, VIL = 0.8 V max.
2	A	input	Data input to the non-inverting buffer. Schmitt-trigger input tolerant of slow rise/fall times; VIH = 2.0 V min, VIL = 0.8 V max, up to 5.5 V.
3	GND	power_in	Ground reference (0 V). Continuous current through GND rated -50 mA max.
4	Y	tri_state	3-state buffered data output. Follows A when OE is LOW, high-impedance when OE is HIGH. Rated ±8 mA drive at VCC = 5.0 V.
5	VCC	power_in	Positive supply voltage. Recommended operating range 4.5 V to 5.5 V; absolute maximum 6.5 V. Continuous supply current rated 50 mA max.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-353
Category	Logic
Pins	5

Ordering variants

74AHCT1G125SE-7
74AHCT1G125SE-7W5-7

CAD (KiCad official)

Symbol: 74AHCT1G125SE-7
Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
3D model: SOT-353 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`74ahct1g125se-7.step`	87 KB	You want the bare part, or you mark your own boards.
`74ahct1g125se-7-etched.step`	2.2 MB	You want the part with `74AHCT1G125SE-7` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 555 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: Diodes Incorporated datasheet (9 pp, sha256 1dc08dc39c2d4026, 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