[sdiy] Issue with CD4024 Ripple Counter

[Kenneth Balys]

Are you quite sure they are 4024's?I recently had a batch of  "NOS" 2114's from a certain country that were expertly painted fakes.
-------- Original message --------From: Roman Sowa <modular at go2.pl> Date: 17/09/2021  08:54  (GMT+00:00) To: synth-diy at synth-diy.org, dixon at mail.ubc.ca Subject: Re: [sdiy] Issue with CD4024 Ripple Counter Try to experiment with slew rate of input signal. Feed it with the fastest edges clock pulse you can get, say 20ns rise time. And decouple the supply pins of the chip generously.If that does not help, tell me what crack you smoke, would love to try that too.RomanW dniu 2021-09-17 o 05:57, David G Dixon via Synth-diy pisze:> Hey SDIY Team,> I've got a device that uses a 4024 ripple counter.  The datasheet says > that it advances on the negative transition of the clock.  All mine > (CD4024BE) are advancing on the positive transition of the clock.  > However, I tried an MC14024BCP and it worked properly.> Am I smoking crack?  Why are my CD4024s behaving opposite to the > datasheet, but the MC14024 is behaving as per the datasheet?  What is it > that I don't know about these devices?> Cheers,> Dave Dixon> > _______________________________________________> Synth-diy mailing list> Synth-diy at synth-diy.org> http://synth-diy.org/mailman/listinfo/synth-diy> Selling or trading? Use marketplace at synth-diy.org> _______________________________________________Synth-diy mailing listSynth-diy at synth-diy.orghttp://synth-diy.org/mailman/listinfo/synth-diySelling or trading? Use marketplace at synth-diy.org
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