[sdiy] FS weird chips... collectors ???
harrybissell
harrybissell at prodigy.net
Sat Feb 26 20:27:59 CET 2005
Just kidding folks !
I have two Beckman 7556CU chips. They are hybrid with ceramic
cover and ceramic substrate. 36 pin x .6" DIL
Any guesses as to what these are. I'm thinking some kind of A/D or
D/A converter, as Beckman was known for precision resistors.
Who knows, maybe an R/2R ladder ?
ANY SUGGESTIONS that this might be a 'cmos dual timer' will be
promptly ignored, after flaming !!! :^P
H^) harry
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