Hi just to check if any one have any experience in using the MAX 232 chip with a voltage source of 3.3 instead of 5 Volt Regards Soon Lee -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads