Path: utzoo!utgpu!watserv1!watmath!att!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!ub!acsu.buffalo.edu From: blw@acsu.buffalo.edu (brian l wybaillie) Newsgroups: sci.electronics Subject: CRYSTAL OSCILLATORS Message-ID: <46904@eerie.acsu.Buffalo.EDU> Date: 18 Nov 90 00:12:37 GMT Sender: news@acsu.Buffalo.EDU Organization: SUNY Buffalo Lines: 18 Nntp-Posting-Host: autarch.acsu.buffalo.edu hello, i am in the process of building a digital capacitance meter for a school design project and am looking for a crystal which will produce 40 MHz. i have checked the ECG catalog but the highest they go is 22 MHz. can anyone point me in the direction of such a beast. also, i was told that the "Pierce Oscillator" circuit was a popular configuration to use as a clock, but i am not sure if this will be adequate for this application. does anyone know if this is true and if so what other configurations exist which will produce a cleaner output clock? (CMOS,74HCTXX) if anyone can help me out with this, i'd appreciate if you could respond by e-mail and i'll summarize. thanks in advance, brian wybaillie telnet: blw@acsu.buffalo.edu bitnet: V091J47X@UBVMS.CC.BUFFALO.EDU