Rs232 line driverreceivers exar sp202ecn 5v high performance rs232 transceiver 120kbps data rate 15us propagation delay 15khz frequency rs232 interface 45v to 55v supply voltage 6v output voltage 0 to 70c 16 nsoic case high data rate low power shutdown 3 state ttlcmos receive exar sp202ecn rs232 driver receiver sm