DESCRIPTION

The U74AVC4T774 is a 4-bit noninverting bus transceiver uses

two separate configurable power-supply rails. The A port is designed

to track VCCA. VCCA accepts any supply voltage from 1.1V to 3.6V.

The B port is designed to track VCCB. VCCB accepts any supply

voltage from 1.1 to 3.6V. The control pins (DIR1, DIR2, DIR3, DIR4,

and OE) are supplied by VCCA. The data transmits from A port to B

port when DIR is high, the data transmits from B port to A port when

DIR is low.

The device is fully specified for partial power-down applications

using IOFF. The IOFF circuitry disables the output, preventing any

damaging backflow current through the device when it is powered

down.

FEATURES

* Each channel has an independent DIR control input

* Control inputs VIH/VIL levels are referenced to VCCA voltage

* Fully configurable dual-rail design allows each port to operate over the full 1.1V to 3.6V power-supply range

* Partial-power-down mode operation