The Renesas Electronics octal bus switch has standard 244 pinouts and is designed for asynchronous communication between data buses. Sets of four switches are controlled by one output Enable (OE). When OE is low, the set of four bus switches is on and port A is connected to port B. When OE is high, the set of four bus switches is off and a high impedance exists between port A and port B.

Pin-out compatible with standard '244 Logic products
5Ω A/B bi-directional switch
Isolation under power-off conditions and over-voltage tolerant