EXAR
芯片, 收发器, RS-232, 5V, SD, 28WSOIC
芯片, 收发器, RS-232, 3V, 28SSOP
收发器, RS232, 3驱动器, 3V-5.5电源, SSOP-28
TEXAS INSTRUMENTS
收发器, RS232, 3驱动器, 3V-5.5电源, VQFN-32