For common cathode.
Is 4511 the cheapest and easiest to get?
I looked at DigiKey and eBay.
Did I miss some other product?

 

For common cathode.
Is 4511 the cheapest and easiest to get?
I looked at DigiKey and eBay.
Did I miss some other product?

Maybe. Depends on how many digits you need to display and what else is in the rest of the circuit.

 

Maybe. Depends on how many digits you need to display and what else is in the rest of the circuit.

Nothing serious.
eBay was doing a discount and I needed to round up the order to 25 USD to get the discount, so I bought some common cathode 7 segment led displays. I can drive them from Uno, but that thing has limited current it can supply and it is total overkill anyway. So I started looking for common cathode driver ic. So far 4511 is the cheapest and easiest to get.

 

In that case, go with the CD4511 and common-cathode displays. That is a common configuration.

 

The 4511 IC is a great part, evidenced that it is still being used and sold after more than 20 years. AND it has the advantage of being multi-sourced so that if one manufacturer has a sudden "production yield" problem you can keep your production like moving. It also has a few nice features available,such as leading zero blanking.