The UMLSF0204 series operate from 0.8 V to 4.5 V (VREF_A) and 1.8 V to 5.5 V (VREF_B). This range allows for bidirectional voltage translations between 0.8 V and 5.0 V without the need for a direction terminal in open-drain or push-pull applications. The device supports speed greater than 100MHz (200Mbps) for open-drain systems with 15 pF capacitive load and 165Ω pull-up resistor.

When the An or Bn port is low, the switch is in the On-state and a low resistance connection exists between the An and Bn ports. The low RON of the switch allows minimal propagation delay and signal distortion. The voltage on the A or B side will be limited to VREF_A and can be pulled up to any level between VREF_A and 5 V. The ability to set up different voltage translation levels on each channel allows a seamless translation between higher and lower voltages selected by the user without the need for a direction pin which minimizes system effort.

The EN pin of the UMLSF0204 is high, the translator switch is on, and the An I/O is connected to the Bn I/O.

- Bidirectional voltage translation with no direction pin

- IOFF supports partial power-down mode operation

- Allow bidirectional voltage level translation between:

-- 0.8 V to 1.8, 2.5, 3.3, 5 V

-- 1.2 V to 1.8, 2.5, 3.3, 5 V

-- 1.8 V to 2.5, 3.3, 5 V

-- 2.5 V to 3.3, 5 V

-- 3.3 V to 5 V

- Up translation

-- ≤100 MHz (200Mbps); CL≤30 pF

-- ≤40 MHz (80Mbps); CL = 50 pF

- Down translation

-- ≥100 MHz (200Mbps); CL≤30 pF

-- ≥40 MHz (80Mbps); CL = 50 pF

- Low standby current

- 5V Tolerance I/O port to support TTL

- Low RON provides less signal distortion

- High-impedance I/O terminals when EN is not activated

- Latch-up performance exceeds 200 mA per JESD 78, Class II

- GPIO, MDIO, PMBus, SMBus, SDIO, UART, I2C and other interfaces in telecom infrastructure

- Industrial

- Automotive

- Personal computing