TEXAS INSTRUMENTS
线路驱动器, RS232/RS423, 2驱动器, 10.8V-13.2电源, DIP-8
芯片, RS232驱动器, 双通道, 8-SOIC
ANALOG DEVICES
芯片, RS232/RS423驱动器, 八路, 116KBPS, PLCC28