SN74LV1T34DCKR 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	NC	unconnected	Not internally connected. May be left floating; some designs tie to GND for mechanical robustness.
2	A	input	Input A. CMOS logic input with reduced (lower) threshold to support level-up translation from 1.2/1.5/1.8 V logic to Vcc-referenced output. 5 V tolerant regardless of Vcc; unused inputs must be tied to Vcc or GND.
3	GND	power_in	Ground / 0 V reference for the device.
4	Y	output	Buffered CMOS push-pull output Y, referenced to Vcc. Drive strength 8 mA at Vcc = 5 V, 7 mA at 3.3 V, 3 mA at 1.8 V. Follows input A (non-inverting).
5	VCC	power_in	Positive supply, 1.65 V to 5.5 V (absolute max 7 V). Sets the output logic level. Decouple with a local 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.

SN74LV1T34DCKR
SN74LV1T34DCKRDCKT
SN74LV1T34DCKRDBVR
SN74LV1T34DCKRDBVT

CAD (KiCad official)

Symbol: SN74LV1T34DCKR
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
`sn74lv1t34dckr.step`	87 KB	You want the bare part, or you mark your own boards.
`sn74lv1t34dckr-etched.step`	2.1 MB	You want the part with `SN74LV1T34DCKR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 540 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 512f47938da1eaf5, 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