SN74HC245PWR

These octal bus transceivers are designed for
asynchronous two-way communication between data
buses. The control-function implementation minimizes
external timing requirements.
The devices allow 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.