ICL7667 http://www.intersil.com/Data/FN/FN2/FN2853/FN2853.pdf Schmitt, fast, and can also level shift from 5V to 12V. I've used it with PWM and 80A FETs, love it -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads