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MC14490DWR2 any replacement for this part

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You don't say where in the world you are.

Newarkinone in the USA and Canada have many of them. Newarkinone is now owned by Farnell that is worldwide and might have them where you are.
 
You can get generally similar functionality in Maxim MAX6818 which is an octal switch debouncer. They also have single MAX6816 and dual MAX6817. I also found a reference to the EDE2008 octal switch debouncer IC from Elab.
 
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