US Sources for old ICs

William Donzelli aw288 at osfn.org
Wed Oct 26 16:13:36 CDT 2005


> Why?  Is it just the bulk lead capacitance, or is there some other way
> in which a DIP package is electrically deficient?

Back in the ECL 100K days, going from a DIP to a flatpack would shave 200
ps. This mattered a great deal back then. Of course now, everything works
at 100K speeds.

They also made for less "bumps" in the transmission line aspects of the
traces. Not a big difference, but enough to think about.

William Donzelli
aw288 at osfn.org




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