[time-nuts] Subs for obsolete chips in pictic
albertson.chris at gmail.com
Sun Dec 11 15:04:35 EST 2011
Looking at the picric II schematic. Trying to decide on the bet
substitute parts for some obsolete parts.
It uses a few 74ACxxx locic family parts that are no longer made. I
think the "74H" or "74F" series should work What do you think? I may
have to adapt an SMD part. They have to work on 5V supply and the
clock is 10MHz. There is also a discontinued op amp but they are
easy to sub.
Redondo Beach, California
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