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Home » RBC Forums » General Discussion » 74LS688 vs 74LS521 (Are these equivalent?)
Re: 74LS688 vs 74LS521 [message #9811 is a reply to message #9810] Wed, 09 March 2022 11:33 Go to previous message
lynchaj is currently offline  lynchaj
Messages: 1080
Registered: June 2016
Senior Member
Hi Sergey
Yes, I re-checked my parts and they're 74F521s. I had them confused with something else but the question is still valid. It looks like I can substitute the 74F521s for 74LS688s. I'll try it with a known working board and check if it causes any issues.

Thanks, Andrew Lynch
 
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