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Configuration1 adds long distance drive capability to an RS-232 channel by connecting the logic I/O of the RS-232 transceiver with the logic I/O of the RS-485 transceiver. The full-duplex structure of the RS-232 interface is maintained for the entire data link. However, since the enable pin of the RS-485 driver is fixed to Vcc potential, the driver remains active all the time. This type of level translator is therefore only suited for point-to-point data links.

PTM Published on: 2017-10-12