型号： IC521A-M 产品描述；Async RS-232 2-Wire RS-485 Interface Line Driver Further Details Passes transmit and receive data only. No AC or batteries needed. Operates with or without echo. No RS-232 control signal is needed to turn around the line. Silicon Avalanche Diodes provide 600 watts per wire of protection against harmful data line transient surges. The RS-232 DB25 is fixed DCE (no switch for DTE/DCE).
This is a high-speed 2-wire only point-to-point line driver. It gets power from the DTE device to run or from an add on external power supply (PS576).
