SN74AHC1G125DBVR from Texas Instruments, in a SOT-23-5. 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, Y goes to high-impedance (3-state). Should be tied to VCC through a pullup during power up/down to ensure Hi-Z.
2	A	input	Buffer data input. CMOS input accepts voltages up to 5.5 V regardless of VCC, allowing down-voltage translation. VIH/VIL scale with VCC (e.g. 3.85 V / 1.65 V at VCC = 5.5 V).
3	GND	power_in	Device ground reference (0 V).
4	Y	tri_state	3-state buffer output. Drives ±8 mA at VCC = 5 V (±4 mA at 3.3 V). Follows A when OE is low; high-impedance when OE is high. Should not be pulled above VCC.
5	VCC	power_in	Positive supply voltage. Recommended operating range 2 V to 5.5 V (absolute max 7 V). Typical ICC ≤ 10 µA.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23-5
Category	Logic
Pins	5

Ordering variants

Same part, different packaging or reel option.

SN74AHC1G125DBVR
SN74AHC1G125DBVRDBVT
SN74AHC1G125DBVRDCKR
SN74AHC1G125DBVRDCKT
SN74AHC1G125DBVRDRLR

CAD (KiCad official)

Symbol: SN74AHC1G125DBVR
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sn74ahc1g125dbvr.step`	85 KB	You want the bare part, or you mark your own boards.
`sn74ahc1g125dbvr-etched.step`	2.4 MB	You want the part with `SN74AHC1G125DBVR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 611 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