U74AVC2T45数据手册UTC中文资料规格书

描述 Description

This 2-bit non-inverting bus transceiver uses two separate configurable power-supply rails. The A ports are designed to track VCCA and accepts any supply Voltage from 1.2V to 3.6V. The B ports are designed to track VCCB and accepts any supply Voltage from 1.2V to 3.6V. This allows for universal low Voltagebidirectional translation and level-shifting between any of the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V Voltage nodes.The U74AVC2T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR pin) input activate either the B-port outputs or the A-port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess leakage current on theinternal CMOS structure.

特性 Features

VCC Isolation Feature: If Either VCC Input Is at GND, Both Ports  Are in the High-Impedance State Dual Supply Rail Design I/Os Are 4.6V Over Voltage Tolerant IOFF Supports Partial-Power-Down Mode Operation