UM3202V from Union Semiconductor, in a VSSOP-8-0.5mm. 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	B2	bidirectional	Input/Output 2, referenced to VCCB (B-side, 2.3V to 5.5V). Bidirectional data line paired with A2 through an internal transmission gate; supports push-pull (24 Mbps) or open-drain (2 Mbps).
2	GND	power_in	Device ground return, 0 V reference for both supplies.
3	VCCA	power_in	A-port supply voltage. Range 1.65V ≤ VCCA ≤ 3.6V, and VCCA must be ≤ VCCB. Sets the logic level for the A-side (A1, A2) and OE input.
4	A2	bidirectional	Input/Output 2, referenced to VCCA (A-side, 1.65V to 3.6V). Bidirectional data line paired with B2 through an internal transmission gate.
5	A1	bidirectional	Input/Output 1, referenced to VCCA (A-side, 1.65V to 3.6V). Bidirectional data line paired with B1 through an internal transmission gate.
6	OE	input	3-state Output Enable, referenced to VCCA. Pulling OE low places all A- and B-side outputs into a high-impedance state, reducing supply current. VIH ≥ VCCA×0.65, VIL ≤ VCCA×0.35.
7	VCCB	power_in	B-port supply voltage. Range 2.3V ≤ VCCB ≤ 5.5V. Sets the logic level for the B-side (B1, B2). Includes ±8kV ESD protection on this rail.
8	B1	bidirectional	Input/Output 1, referenced to VCCB (B-side, 2.3V to 5.5V). Bidirectional data line paired with A1 through an internal transmission gate; supports push-pull (24 Mbps) or open-drain (2 Mbps).

Key specifications

Parameter	Value
Manufacturer	Union Semiconductor
Package	VSSOP-8-0.5mm
Category	Logic
Pins	8

Ordering variants

Same part, different packaging or reel option.

UM3202V
UM3202Q
UM3202H

CAD (KiCad official)

Symbol: UM3202V
Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`um3202v.step`	122 KB	You want the bare part, or you mark your own boards.
`um3202v-etched.step`	1.8 MB	You want the part with `UM3202V` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 430 faces against 147 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: Union Semiconductor datasheet (15 pp, sha256 4c291947b17a8c65, retrieved 2026-08-17, tier: lcsc)
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