SN54ABT162245 Overview
GND 21 28 GND The control-function implementation minimizes 2B7 22 27 2A7 external timing requirements. They 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 effectively are isolated.