I too would recommend the 74HCT9046A instead of the 4046. The data sheet is here; https://assets.nexperia.com/documents/data-sheet/74HCT9046A.pdf
*Ms. Tisha Hayes* On Wed, Apr 18, 2018 at 8:27 AM, Bob kb8tq <kb...@n1k.org> wrote: > 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 <donaldbcol...@gmail.com> > 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 -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.