EXAR
芯片, 收发器, RS232/485/422
MAXIM INTEGRATED PRODUCTS
收发器, RS232, 4.75V-5.25V电源, 5驱动器, WSOIC-28
收发器, RS232, 4.5V-5.25V电源, 5驱动器, WSOIC-28
芯片, 收发器, RS232/485, 可编程, 28WSOIC