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Old 21st Nov 2018, 7:19 pm   #9
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Default Re: Quick query: IC with 2 ENA pins and at least 2 input / outputs

Quote:
Also I think I need TTL level signals into the 7400?
TTL is fine with 0..5V inputs on a 5V supply, the output of a classic TTL (not CMOS) won't go all the way up (or down).