DS8933 (RS-422/423 LINE DRIVERS AND RECEIVERS) V.34 Serial Port 2x1 Driver/Receiver +-----------+ VEE |1 +--+ 14| VCC DIN1 |2 13| NC ROUT1 |3 12| NC DIN2 |4 DS89 11| RC1 GND |5 33 10| DOUT1- NC |6 9| RIN1- DOUT2- |7 8| RC2 +-----------+