I'm designing a test board for a laser controller. Incoming signals, fast 5 volt pulses, will need to get routed to scopes, counters, and some other stuff. It will be kind a maze of connectors and traces and probably relays; it's hard to beat a relay as a test path switch.
But life would be a lot better if I could fan out some of the signals at their input connector. I want a zero-delay, zero-jitter buffer. Under 1 ns delay might be a reasonable target, with very stable prop delay.
Just resistors could work, but that loses amplitude, and the ends of the fanout traces would have to be always terminated to avoid reflections. Something unilateral would be easier.
Fast opamp? THS3201 maybe. I'll have to Spice the prop delay.
Some sort of source follower, bipolar or phemt or something?
ECL/Eclips gate? 10EP89 or something.
One of the screaming Analog Devices comparators?
CMOS parts are probably all too slow, and they have terrible delay tempcos.