The TXS0104W is a 4-bit non-inverting translator, which uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This allows for low-voltage bidirectional translation between any of the 1.2V, 1.8V, 2.V, 3.3V, and 5V voltage nodes. When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The TXS0104W is designed so that the OE input circuit is supplied by VCCA. For the high-impedance state during power up or power down, tie OE to GND through a pull-down resistor. The minimum value of the resistor is determined by the current-sourcing capability of the driver.