Yep, that's why its open drain.  Must limit to +14V and if driving a
     relay, watch out for back EMF.

     Rgds, Brian.


______________________________ Reply Separator _________________________________
Subject: Open drain
Author:  "Clewer;Brian" <brian.clewer@TELEMATICS.COM> at Internet_Exchange
Date:    4/16/97 4:07 PM


Hi,
     If RA4 is open drain, can I put a higher voltage onto it to pull it up.
 Eg.  can I use a 12V relay between +12V and RA4?
Thanks for any help in advance,
Brian.