🚀 go-pugleaf

In article <1992Sep3.030812.15165@news.iastate.edu> mhbrekke@iastate.edu (Monty H. Brekke) writes:
   I am looking for a very fast (< 1ns) 
   voltage comparator. I don't care what
   technology the thing is implemented in...
   In addition to the high speed, I need an
   input voltage range of +/- 5V.

The bugbear in your requirements is the input voltage
range; not many GHz grade IC technologies can handle
higher than 4-6 volts.  And that's across the supplies
(V+ minus V-): input commonmode range is smaller.

How about a 1:10 attenuator (compensated of course)
followed by an ECL line receiver in the SPECL
(Sony) or ECLiPS (Motorola) families?

Also there is a very good chance that the properties
of your input signals will permit true AC coupling.
In part this is because your input signals are required
to have FAST EDGES (otherwise it is, in a practical sense,
foolhardy to insist upon very short propagation delay;
excess delay in the comparator will be indistinguishable
from amplitude error in the input signals).

MJ