TEXAS INSTRUMENTS
线路接收器, RS232, 2驱动器, 4.5V-5.5电源, SOIC-16
收发器, RS232, 2驱动器, 3V-5.5电源, TSSOP-16
收发器, RS232, 3驱动器, 3V-5.5电源, TSSOP-20