5 Sep
2011
5 Sep
'11
1:45 p.m.
DEC didn't develop it, National Semiconductor
developed it, and sold it
as the DS8837.
DEC had them binned for slightly tighter receiver threshold and leakage
current specifications, so in principle a DS8837 might not meet the DEC
specifications for a DEC8837. In practice they almost always did, as
National Semiconductor was fairly conservative about the specifications
for the standard part.
Another point is that DEC may well have used their tighter-spec parts
everywhwre, even where the standard one would do, rather than having 2
different chips (normal and selected) around.
Looking at the scheamtics of the board in question, and given that th
cables involved are quite short, I think the stnadard part will work.
-tony