10 May
2001
10 May
'01
12:06 p.m.
It is indeed old. Another source of ECL (ECL10K) was
RP04/5/6 disks that are definately over 10 years old
and I have a bunch of 10113, 10120, 10125 and the
venerable 11c90 and 95h90 divide by 10 ECL
counters from the early 70s (spares for my yasu 355
350mhz frequency counter).
The common voltage used was -5.2 though there were
-3.2 and +2 and the other was -2 and +3.2 so the
transistion voltages were near or around 0V.
If memory serves the infamous Cray YMP was
majorly ECL for speed.
Allison