ADUM1401: I/P maximum voltage

Document created by analog-archivist Employee on Feb 23, 2016
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I want to use the optoisolator ADUM1401ARW in my design. It will be used for
the isolation of the TXD data line of the RS232 port. Could I connect the TXD
data line of the PC's RS232 directly to the isolators inputs?
In many application I saw that the rs232 lines are passed through the RS232
transceiver (MAX232) and then connecte to the isolator. Do I have to do like
this? Or can I connect RS232 datalines directly to the isolators?


See page 14 of the ADUM1401 datasheet. All input voltages are relative to their
respective grounds, and must not exceed –0.5 and VDDI +0.5.