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This design note presents the reference designs of isolated RS-485 nodes, using bus voltages of 3.3 V and 5 V. Various transceivers are used to satisfy the requirements for low, medium, and high data rates, as well as to accommodate the need for half- and full-duplex operation. The family of isolated RS-485 transceivers from Texas Instruments includes:
ISO3082
ISO15
ISO1176
ISO3088
ISO3080
ISO35
ISO3086