Quick question about TTL parts

Just different manufacturers.

I get most of my TTL's from Great Plains Electronics, as I find Ed's prices are usually much better than Digikey. He doesn't stock every TTL part, but the ones he does have are almost always cheaper.

Just type 'LSxxx' into his search, where xxx is whatever type you're looking for. He also usually the HCT equivalents for many parts, which can usually be substituted ok. (I've used many on Atari boards and never had an issue, though there are rare cases for other boards where it has mattered.)
 
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