Nicolas REIMENThere are a number of good suppliers on ebay. Particular thanks to:
The Soviets copied the TI catalog of TTL 74xx chips from the 70s onwards. The oldest chips I have come across so far have date-codes from the early 80s. The following page has a very useful correspondence table between the Soviet model numbers and those of the 74xx series. With their Cyrillic markings and inimitably soviet-style plastic containers, these chips have an undeniable coolness factor to them. Here is a pictures of several of them:
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