Dual RS-232 Transceiver, 400Kbps, 5V, SO, Full Duplex
RS-232 Bus Transceiver, 2 Tx/Rx, 250Kbps, 5V, SOIC
Dual-RS232 Receiver, 250Kbps, 5.5V, SO-8 Package, Surface Mount
ST3232BDR-LF