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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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README.mdadded+61@@ -0,0 +1,61 @@+# 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 = VCCA*0.65 min; VIL = VCCA*0.35 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++- `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)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Union Semiconductor datasheet](docs/um3208uk-datasheet.pdf) (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](docs/um3208uk-datasheet.pdf)
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