> Does anyone of you have a clue (i.e. timing, supply voltage limits, > complete pinout) about the following chips: > > MC 660 L 4-NAND > MC 671 L tripple 3-NAND > MC 672 L quad 2-NAND > MC 680 L hex INVERTER > > These are in a piece of control electronics dating back to 1972-76. > They seem to be straight-forward logic chips running from a 15V supply > (CMOS? hardly I believe...). I am looking for possible drop-in > replacements, otherwise I would have to re-do the whole thing with its > 30+ chips on three PCBs in a more modern technology...
These were listed in a 1969 Motorola databook which I can't find at the moment. The SPxxx series is Sylvania from the same era. They were obselete in 1979 when I encountered them in some military microwave synthesizers. Those were in 10-pin T05 style cans. FWIW, I have about 10 each of MC670P, MC661P, and MC665P in plastic DIP, condition unknown. -=-=-=-=-=- "http://www.dibsplace.com/design/"; -=-=-=-=-=- DIBs Electronic Design | Dave Baldwin Adapt and overcome. | Buy a book and read it. -=-=--=-=--=-=--=-=--=-=-=-=--=-=--=-=--=-=--=-=--=-=-=-=- -- Author: Dave Baldwin INET: [EMAIL PROTECTED] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
