the data sheet for the ADM2484E device lists the voltage supply range for VDD1 from 3.3V to 5V. The VDD2 supply is rated 3.3V. On page 16, observing Table 7 we can see VDD1 is rated to 7V max, however VDD2 is rated up to 6V.
ADM2484E Pin7 & Pin 10 is NC pin ,TI ISO3080 show GND1 & GND 2 ,But ADM2484E datasheet Pin7 & Pin 10 description "No Connect. This pin must be left floating." if mount ISO3080 PCB Layout have any question ??
when our system run in the field, which is damaged, ADM2484E communication isn't normal, system return back , we find A/B differential signal is different with normal things, pls help analyze, enclosed is SCH,normal wave and un-normal wave.