4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

DESCRIPTION

The UTC UVXS0104 is a 4-bit non-inverting bidirectional

voltage-level translator. The UTC UVXS0104 separates A ports

with B ports, and both ports are configurable power-supply rails,

with the A ports supporting operating voltages from 1.65V to 3.6V,

and the B ports supporting operating voltages from 2.3V to 5.5V.

This allows the support of both lower and higher logic signal levels

while providing bidirectional translation capabilities between any of

the 1.8V, 2.5V, 3.3V, and 5V voltage nodes.

All I/Os of the UTC UVXS0104 are placed in the

high-impedance state when the output-enable (OE) input is low,

The UTC UVXS0104 is designed so that the OE input circuit is

supplied by VCCA. So, to ensure the high-impedance state during

power up or power down, OE should be tied to GND through a

pull-down resistor; the minimum value of the resistor is determined

by the current-sourcing capability of the driver.

FEATURES

* Maximum Data Rates

24 Mbps (Push Pull)

2 Mbps (Open Drain)

* 1.65V~3.6V on A ports and 2.3V~5.5V on B ports (VCCA≤VCCB)

* No Direction-Control Signal Needed

* No Power-Supply Sequencing Required: -VCCA or

VCCB Can Be Ramped First

* Ioff Supports Partial-Power-Down Mode Operation