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UM3208UK

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Union Semiconductor Translators / Level Shifters, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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UM3208UK

Union Semiconductor · Translators / Level Shifters · TSSOP-20

UM3208UK from Union Semiconductor, in a TSSOP-20. 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 A1 bidirectional Input/Output 1 on the A port. Referenced to VCCA (1.65V to 3.6V). Bidirectional level-translation channel paired with B1.
2 VCCA power_in A-port supply voltage. Range: 1.65V to 3.6V, and must satisfy VCCA <= VCCB. Sets the logic level on the A side.
3 A2 bidirectional Input/Output 2 on the A port. Referenced to VCCA. Bidirectional level-translation channel paired with B2.
4 A3 bidirectional Input/Output 3 on the A port. Referenced to VCCA. Bidirectional level-translation channel paired with B3.
5 A4 bidirectional Input/Output 4 on the A port. Referenced to VCCA. Bidirectional level-translation channel paired with B4.
6 A5 bidirectional Input/Output 5 on the A port. Referenced to VCCA. Bidirectional level-translation channel paired with B5.
7 A6 bidirectional Input/Output 6 on the A port. Referenced to VCCA. Bidirectional level-translation channel paired with B6.
8 A7 bidirectional Input/Output 7 on the A port. Referenced to VCCA. Bidirectional level-translation channel paired with B7.
9 A8 bidirectional Input/Output 8 on the A port. Referenced to VCCA. Bidirectional level-translation channel paired with B8.
10 OE input 3-state output enable, referenced to VCCA. Drive OE low to place all A- and B-port outputs into high-impedance (3-state) mode, reducing supply current. VIH = VCCA0.65 min; VIL = VCCA0.35 max.
11 GND power_in Ground reference for the device.
12 B8 bidirectional Input/Output 8 on the B port. Referenced to VCCB (2.3V to 5.5V). ±6kV ESD protected.
13 B7 bidirectional Input/Output 7 on the B port. Referenced to VCCB. ±6kV ESD protected.
14 B6 bidirectional Input/Output 6 on the B port. Referenced to VCCB. ±6kV ESD protected.
15 B5 bidirectional Input/Output 5 on the B port. Referenced to VCCB. ±6kV ESD protected.
16 B4 bidirectional Input/Output 4 on the B port. Referenced to VCCB. ±6kV ESD protected.
17 B3 bidirectional Input/Output 3 on the B port. Referenced to VCCB. ±6kV ESD protected.
18 B2 bidirectional Input/Output 2 on the B port. Referenced to VCCB. ±6kV ESD protected.
19 VCCB power_in B-port supply voltage. Range: 2.3V to 5.5V, and must be greater than or equal to VCCA. Sets the logic level on the B side.
20 B1 bidirectional Input/Output 1 on the B port. Referenced to VCCB. ±6kV ESD protected.

Key specifications

Parameter Value
Manufacturer Union Semiconductor
Package TSSOP-20
Category Logic
Pins 20

Ordering variants

Same part, different packaging or reel option.

  • UM3208UK
  • UM3208UKH
  • UM3208UKQA

CAD (KiCad official)

  • Symbol: UM3208UK
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: um3208uk-etched.step / um3208uk-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); um3208uk.step / um3208uk.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Union Semiconductor datasheet (15 pp, sha256 83f6388f7e438b32, 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