RS485 to RS232 Interface Converter


The ic485-3 Interface Converter provides asynchronous conversion between RS-232 interface and RS-485 standard interface. The RS-232 interface connection is via the unit’s DB-25F female connector, while the RS-485 side’s connection is via a five screw terminal block. The ic485-3 converter’s circuitry provides a high degree of electrical isolation between the RS-232 and RS-485 sides. The RS-232 side may operate as DTE or DCE, has provisions for establishing hardware flow control, and has LEDs to indicate data transmission and reception. The RS-485 side may operate in either two wire half duplex or four wire half or full duplex and also has LED’s to indicate data transmission and reception.


  • Electrically converts RS-232 to RS-485
  • RS-485; 2 or 4 wire, Half or Full Duplex
  • Supports optical isolation, electrical isolation of 2500V minimum
  • DTE/DCE switch selectable
  • Data rate up to 128Kbps
  • External DC power required
  • RS-232 handshaking; DTR/DSR, RTS/CTS or Auto