Actually, the MECL System Design Handbook deals mainly with signal integrity issues on the PCB. As I said, it's an important work on which much of the signal integrity software (IBIS) in use today has been based, at least in part, and it's important that anyone designing PCB's and systems that use relatively high-speed hardware with steep rise and fall times be aware of the principles discussed within it.

My specific issue was that I remembered that I once referred to it, yet was unable to find my post in which I did that, in order to use the same link again. I actually have plenty of literature, in printed form, regarding the use of ECL, as, back when I was a beginner, TTL was still a new and unproven logic family. If one wished to exceed 20 MHz clock rates, one used ECL. Things have changed, of course, but the principles discussed in that old Motorola handbook still apply.

RE