U74AHC245

DESCRIPTION 

The U74AHC245 octal bus transceivers is designed for 

asynchronous two-way communication between data buses. The 

control-function implementation minimizes external timing 

requirements. 

The device allows data transmission from the A bus to the B 

bus or from the B bus to the A bus, depending on the logic level at 

the direction-control (DIR) input. The output-enable ( OE ) input can 

be used to disable the device so that the buses are effectively 

isolated. 

To ensure the high-impedance state during power up or power 

down, OE should be tied to VCC through a pullup resistor; the 

minimum value of the resistor is determined by the current-sinking 

capability of the driver. 

FEATURES 

* Operating range 2V to 5.5V VCC