The main function of the TD331S485H / TD531S485H series is to convert a logic level signal into isolatedRS485 diferential level signals. The special integrated IC technology of the RS485 transceiver achievesisolation between the power supply and the sianal lines isolation, does RS485 communication andprotects the bus all in one and the same module. The product's isolated power supply withstands a testvoltage of up to 2500VDC. The products are using pick and place SMD technology, thus enabling the useof fully automated processing. Also, they can easily be embedded in the user's end equipment, to achievefully functional RS485 network connections.