TEXAS INSTRUMENTS
芯片, 线驱动器, 4路, BiCMOS, SOP, 16脚
EXAR
芯片, 收发器, RS-232, 5.5V, SSOP-16
STMICROELECTRONICS
线路驱动器, RS422, 4驱动器, 4.5V-5.5电源, SOIC-16