MAX2202x/F Isolated RS-485/RS-422 Transceivers Analog Devices MAX2202x/F Isolated RS-485/RS-422 Transceivers provide 3.5kVRMS of digital galvanic isolation between the cable-side (RS-485/RS-422 driver/ receiver-side) and the UART-side of the device. Isolation improves communication by breaking ground loops and reduces noise when there are large differences in ground potential between ports. These devices allow for robust communication up to 0.5Mbps or 16Mbps.