Automotive, 1.2V, 4-bit, bidirectional voltage-level translator for open-drain and push-pull

The TXS0104W-Q1

device connects an incompatible logic communication from chip-to-chip due to voltage

mismatch. This auto-direction translator is used to bridge the gap without the need

of direction control from the host. Each channel can be mixed and matched with

different output types (open-drain or push-pull) and mixed data flows (transmit or

receive) without intervention from the host. This 4-bit noninverting translator uses

two separate configurable power-supply rails. The A and B ports are designed to

track VCCA and VCCB respectively. The VCCB pin

accepts any supply voltage from 1.65V to 5.5V. The VCCA pin accepts any

supply voltage from 1.2V to 3.6V such that VCCA is less than or equal to

VCCB. This tracking allows for low-voltage bidirectional translation

between any of the 1.8V, 2.5V, 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-Q1 device is designed so that the OE input circuit is supplied by VCCA.

To be in the high-impedance state during power up

or power down, the OE pin must be tied to the GND pin through a pull down resistor.

The minimum value of the resistor is determined by the current-sourcing capability

of the driver.