Thomas Sefranek comcast.net> writes: >=20 > I prefer 74xxx14, reliable, works every time for me. > And I also have used S.T. NAND gates as reliable oscillators. xx14 is Schmitt, and not suitable for making Xtal oscillators afaik. I woul= d be interested to find out otherwise. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .