The UM3204 is ±15kV quad channel ESD-protected level translator that provide the level shifting necessary to allow data transfer in a multi-voltage system. It can be used for SPI, MICROWIRE, and I2C Level Translation, Low-Voltage ASIC Level Translation, Smart Card Reader, etc.
The UM3204 is a 4‑bit bidirectional voltage‑level translator designed for open‑drain and push‑pull applications. It shifts logic levels between low‑voltage ASIC/PLD interfaces (1.65 V‑3.6 V) and higher‑voltage systems (2.3 V‑5.5 V), providing up to ±15 kV ESD protection on the high‑voltage side. The device operates without a direction‑control signal and includes three‑state outputs that reduce supply current when OE is low.
Key features include a supply voltage range of 1.65 V to 3.6 V for the A‑port and 2.3 V to 5.5 V for the B‑port, continuous output current of +50 mA, and a maximum push‑pull data rate of 24 Mbps. The translator is available in 1.9 × 1.4 mm CSP12 and 3.5 × 3.5 mm QFN14 packages, with optional tape‑and‑reel packaging for volume production.
| ESD protection | +15 kV |
|---|---|
| A‑port supply voltage (Veca) | 1.65 V to 3.6 V |
| B‑port supply voltage (Vecg) | 2.3 V to 5.5 V |
| Continuous output current | +50 mA |
| Maximum push‑pull data rate | 24 Mbps |
The A‑port (Veca) operates from 1.65 V to 3.6 V.
Pull the OE input low; this places all I/Os in a high‑impedance (Hi‑Z) state.