U74LVC4245中文资料逻辑IC数据手册UTC规格书

描述 Description

This 8-bit (octal) noninverting bus transceiver contains twoseparate supply rails; B port has VCCB, which is set at 3.3V, and Aport has VCCA, which is set at 5V. This allows for translation froma 3.3V to a 5V environment, and vice versa.The U74LVC4245 device is designed for asynchronouscommunication between data buses.The device transmits data from the A bus to the B bus or fromthe B bus to the A bus, depending on the logic level at thedirection-control (DIR) input.The output-enable ( OE ) input can be used to disable thedevice so the buses are effectively isolated. The control circuitry(DIR, OE ) is powered by VCCA.The U74LVC4245 device terminal out allows the designer toswitch to a normal all-3.3V or all-5V 20-terminal U74LVC4245device without board relay out.

特性 Features

Bidirectional voltage translator 5.5V on A port and 2.7V to 3.6V on B port Control inputs VIH/VIL levels are referenced to VCC voltage