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Wanted - 7 segment clock chips CT7001 or AY51224

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onlyme
Grafter
Posts: 65
Registered: 23-02-2008

Wanted - 7 segment clock chips CT7001 or AY51224

Many years ago I built two 7 segment clocks with these chips.  Has anyone got any floating around in their junkbox?  These chips are not made any more, or any equivalent as far as I know, unless anyone can advise me otherwise.  Both these chips had multiplexed outputs and used transistor drivers for the displays.
2 REPLIES
Superuser
Superuser
Posts: 2,459
Thanks: 867
Fixes: 8
Registered: 10-04-2007

Re: Wanted - 7 segment clock chips CT7001 or AY51224

I've emailed a colleague who has a vast stock of electronic ephemera!  You may be lucky Cheesy
Maurice
onlyme
Grafter
Posts: 65
Registered: 23-02-2008

Re: Wanted - 7 segment clock chips CT7001 or AY51224

OK, thanks Maurice, I will wait to hear from you further.  Any other clock chips will do, they do not have to be the ones I specified as long as they have 7 segment outputs.  NTE2060/1 are fine but they do not have multiplexed outputs and these are also getting difficult to find.  I could use  BCD chips and then BCD to 7 segment decoders but this involves too much effort.