SP334

SP334 Programmable RS-232/RS-485 Transceiver +5V Single Supply Operation Software Programmable RS-232 or RS-485 Selection Three RS-232 Drivers and Five Receivers in RS-232 Mode Two RS-485 Full-Duplex Transceivers in RS-485 Mode Full Differential Driver Tri-State (Hi-Z) Control Receiver Output Tri-State Control TI3 1 TXEN(n/c) 2 TX4(n/c) 3 TX3 4 VCC 5 TX1 6 TX2 7 GND 8 C1+ 9 V+ 10 C2+ 11 C1– 12 C2– 13 V– 14 SP334 28 TI2 27 TI1 26 RXEN 25 RS232/RS485 24 RI5 23 RX5 22 RX4 21 RX3 20 RX2 19 RX1 18 RI4 17 RI3 16 RI2 15 RI1 (in RS-232 Mode) DESCRIPTION The SP334 is a programmable RS-232 and/or RS-485 transceiver IC. The SP334 contains three drivers and five receivers when selected in RS-232 mode; and two drivers and two receivers when selected in RS-485 mode. The RS-232 transceivers can typically operate at 230kbps while adhering to the RS-232 specifications. The RS-485 transceivers can operate up to 10Mbps while adhering to the RS-485 specifications. T...