ISO1176T Isolated Profibus® Transceiver Texas Instruments ISO1176T Isolated Profibus® Transceiver is an isolated differential line transceiver with integrated oscillator outputs that provide the primary voltage for an isolation transformer. TI ISO1176T is ideal for long transmission lines because the ground loop is broken, allowing the device to operate with a much larger common-mode voltage range. The symmetrical isolation barrier of each device is tested to provide 4242VPK of isolation per VDE for 60 seconds between the line transceiver and the logic-level interface. The galvanically isolated differential bus transceiver is an integrated circuit for bi-directional data communication on multipoint bus transmission lines. The transceiver combines a galvanically isolated differential line driver and a differential input line receiver.