SN74LV1T125DCKR 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	Output enable, active low. When OE is low, the buffer drives Y from A; when OE is high, Y is placed in high-impedance (3-state).
2	A	input	Logic data input A. Level-shifted CMOS input with reduced VIH threshold (e.g. VIH min ~1.37 V at VCC = 3.3 V) allowing 1.8 V logic to drive a 3.3 V VCC device. 5.0 V tolerant.
3	GND	power_in	Device ground reference (0 V).
4	Y	tri_state	Buffered CMOS push-pull output referenced to VCC. Drives 8 mA at 5 V, 7 mA at 3.3 V, 3 mA at 1.8 V. Enters high-impedance when OE is high.
5	VCC	power_in	Positive supply, 1.8 V to 5.5 V recommended (absolute max 7.0 V). Output logic levels are referenced to VCC.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SN74LV1T125DCKR
SN74LV1T125DCKRDCKT
SN74LV1T125DCKRDBVR
SN74LV1T125DCKRDBVT

CAD (KiCad official)

Symbol: SN74LV1T125DCKR
Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
3D model: SC-70-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sn74lv1t125dckr.step`	87 KB	You want the bare part, or you mark your own boards.
`sn74lv1t125dckr-etched.step`	2.2 MB	You want the part with `SN74LV1T125DCKR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 564 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 9015da94e1d20a4c, 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