SN74AUP1G04DCKR 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	No internal connection. Leave floating or tie to a static level; does not affect device operation.
2	A	input	Logic input A to the inverter. CMOS input with hysteresis (Vhys = 250 mV typ at 3.3 V); accepts 0 V to 3.6 V regardless of VCC (3.6-V I/O tolerant). Must not be left floating during operation.
3	GND	power_in	Ground reference (0 V) for the device. Connect to system ground with a low-impedance path.
4	Y	output	Inverter output Y = /A. Push-pull CMOS output; drive capability scales with VCC (e.g. IOH/IOL = ±4 mA at VCC = 3 V, ±1.9 mA at 1.65 V). Supports live insertion via Ioff.
5	VCC	power_in	Supply voltage input. Recommended operating range 0.8 V to 3.6 V (optimized for 3.3 V). Decouple to GND with a local ceramic capacitor (typ. 0.1 µF).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SN74AUP1G04DCKR
SN74AUP1G04DCKRDCKT
SN74AUP1G04DCKRDBVR
SN74AUP1G04DCKRDBVT
SN74AUP1G04DCKRDRLR
SN74AUP1G04DCKRDRYR
SN74AUP1G04DCKRDSFR
SN74AUP1G04DCKRYFPR
SN74AUP1G04DCKRDPWR

CAD (KiCad official)

Symbol: SN74AUP1G04DCKR
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
`sn74aup1g04dckr.step`	87 KB	You want the bare part, or you mark your own boards.
`sn74aup1g04dckr-etched.step`	2.5 MB	You want the part with `SN74AUP1G04DCKR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 639 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 (48 pp, sha256 922f3fd817901e89, 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