IC ID help needed

From: Ethan Dicks <ethan_dicks_at_yahoo.com>
Date: Fri Mar 31 22:38:31 2000

I've done the basic digging (www.chipdir.com, etc.) and can't find info
on the following chips I found in a box of stuff some one gave me a while
back:

AMD 91L02 - I know it's some kind of SRAM but not the size or pinout. The 9101
is 256x4. This one is likely to be either 1024x1 or 1024x4 but I don't know
which.

NS 74C921 - The 74C922 and 74C923 are somewhat common keyboard encoders, one
of which was used on the Netronics Elf-II design. I can't find any info on
the pinout of the 74C921, but I did find several places selling them from
$6 USD to 72 Danish Kroner (however much that is)

I have a few of each, along with 2Kb of 21L02 chips (-2L and -4L speeds,
whatever they are), all with 1979 - 1983 date codes.

Any clues?

Thanks,

-ethan


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Received on Fri Mar 31 2000 - 22:38:31 BST

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