Ideally suited to isolated applications where a remote device is powered through a cable, Exar’s XR33032/5/8 RS-485 transceivers are optimised to operate over a wide 2,8 V to 5,5 V supply voltage range. They can tolerate significant voltage drop along the cable resistance and still maintain compliant RS-485 output levels and performance, even with a 2 V drop in the cable (when utilising a remote 5 V power supply). The chips support 250 Kbps, 1 Mbps and 10 Mbps data rates and are fully compliant to the TIA/EIA-485 and TIA/EIA-422 standards when operated above 3,0 V. They offer ±18 V fault tolerance for direct shorts to DC or AC, ±70 V transient protection, and exceed the highest ESD rating of IEC 61000-4-2 Level 4.
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