ANALOG DEVICES
收发器, RS232, 2驱动器, 3V-5.5电源, DIP-18
差分线路收发器, 驱动器RS485, 4.75V-5.25V电源, DIP-8
收发器, RS232, 4驱动器, 4.5V-5.5电源, SOIC-28