Hi all, I just found the answer to my previous question: I never looked up the common-mode input range,it is only up to Vdd - 2.3v Sorry for the bandwidth Thanks, Sean | | Sean Breheny | Amateur Radio Callsign: KA3YXM | Electrical Engineering Student \--------------=---------------- Save lives, please look at http://www.all.org Personal page: http://www.people.cornell.edu/pages/shb7 mailto:shb7@cornell.edu ICQ #: 3329174