Hi If this is a new build, why use a 4046 in the first place? There are many newer parts that will do all sorts of things. If this is a repair of something that has been running for years, is it > 5V supply to the chips? If so, you are pretty much stuck with 4000 series CMOS.
There are no fatal flaws in the 4046, but there are basic design limitations. Those have been well documented over the years and here on the list. Going to a better part is the answer for that stuff ( = get away from any xxxx4046 IC). Bob > On Apr 18, 2018, at 4:04 AM, donald collie <[email protected]> wrote: > > I have 4 frequency synthesiser projects, each using HEF4046BCN`s, but have > recently read that this CMOS IC has a design flaw. What would be a better > chip to retrofit? I`m thinking perhaps a HEF74HC4046AN [that`s if it > doesn`t have the same bug], or a 74HC7046AN - which is similar. Both these > chips are more-or-less pin compatable TIA for any > advice!.......................................................................................................Don > > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > Virus-free. > www.avg.com > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
