The ISO1176DW is a RS-485 isolated differential Line Transceiver designed for use in PROFIBUS applications. The device is ideal for long transmission lines because the ground loop is broken to provide for operation with a much larger common-mode voltage range. The symmetrical isolation barrier of each device is tested to provide 2500VRMS of isolation per UL between the line transceiver and the logic level interface. The galvanically isolated differential bus transceiver is an integrated circuit designed for bidirectional data communication on multipoint bus-transmission lines. The transceiver combines a galvanically isolated differential line driver and differential input line receiver. The driver has an active-high enable with isolated enable-state output on the ISODE pin (pin 10) to facilitate direction control. The driver differential outputs and the receiver differential inputs connect internally to form a differential input/output (I/O) bus port.
Bus-pin ESD protection
10pF Maximum low bus capacitance
Up to 160 transceivers on a bus
Fail-safe receiver for bus open, short or idle
2500VRMS isolation rating per UL 1577
50kV/µs Typical transient immunity
Green product and no Sb/Br
This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
