Isolated RS-232 to RS-485 Signaling Converter

This module provides a solution for converting  RS232  signaling to  RS485  signaling. This allows long-distance communication since the range supported by RS232 is normally less than  50 feet  while RS485’s range can exceed  1000 feet. The design features an RS232 transceiver, an RS485 transceiver, a multivibrator, and a digital isolator with integrated power to implement bidirectional half-duplex communication without any software interference. The board has been tested for up to  800 feet  in length with a two-wire twisted pair cable. Up to  115200 baud  rate communication between two PCs via serial port has been successful. The design features the industrial standard IEC 61000-4-2 and 61000-4-4 protection with 5000 Vrms isolation protection.

C121