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Multiprotocol 422/485/232 design

Question asked by MMartin on Mar 14, 2012
Latest reply on Dec 9, 2014 by RAnslow

Hi all,


I'm designing an isolated interface multiprotocol 422/485/232 , a ADuM5402 and a ADuM1400 can be usefull to isolate the signals before the PHY IC (LTC or ISL probably), it seems good but I'm not sure about the power (500mW on 5V) provided by ADuM5402.


Are 500mW enough to meet the 485 specifications regard to the output short limits? It seems 100 mA are too low respect to the numbers I found out ( 250 mA), can someone confirm please?


Thanks in advance,