RS-232 Bus Transceiver, 4 Tx, 5 Rx, 3.3V, SOIC, 116Kbps
Quad Transmitter Quint Receiver RS-232 28-Pin SOIC W Tube
Bus Transceiver, 4Tx/5Rx, 3.3V, 116Kbps, SOIC, SM
Quad Transmitter Quint Receiver RS-232 28-Pin SOIC W T/R