SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

DESCRIPTION

This single-bit noninverting bus transceiver uses two separate

configurable power-supply rails. The UTC U74AVC1T45 is

optimized to operate with VCCA/VCCB set at 1.4V to 3.6V. It is

operational with VCCA/VCCB as low as 1.2 V. 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 1.2V to 3.6V. This allows for universal low-Voltage,

bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V,

and 3.3V voltage nodes.

FEATURES

* VCC Isolation Feature: If Either VCC Input Is at GND, Both Ports

Are in the High-Impedance State

* Dual Supply Rail Design

* DIR Input Circuit Referenced to VCCA

* ±12mA Output Drive at 3.3V

* I/Os Are 4.6V Over Voltage Tolerant

* IOFF Supports Partial-Power-Down Mode Operation