On Sat, 13 Mar 2004 13:31:26 -0800, John Larkin
wrote:

I don't know of any really fast Schmitts. An HC14 followed by an AC04
should have fast edges. My favorite thing like this is an OnSemi
NL37WZ16 with all three sections in parallel. Powered from +6 or so,
it puts 5 volts into 50 ohms in something like 750 ps.

The old original RCA AC-series parts were sub-ns - crude and rude,
they were - but some ACs are now a little slower to reduce ground
bounce.

Most of the LVDS-to-TTL LVDS line receivers make damned fine
comparators with sub-ns output edges.

For screaming edges, there's always the step-recovery diode, or a
medium-power gaasfet like the CLY2.

Thanks, John.
I don't see the need for anything super-fast in this instance (I mean
- 3 to4 Mhz for God's sake) but was just curious as to what they use
in UHF and beyond...
2morrow I'm going to stick Reg's 17.2Mhz BPF in line and see if that
kills the 3rd enough to allow the 5th to thrive.
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