do single-supply 1ns comparators exist?

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Hi,

could somebody help me find a high-speed (1ns rise/fall or better)
single-supply (5V) comparator, preferably with ECL output? Programmable
hysteresis would be great.

The high-speed devices I've come across so far all require a dual
+5V/-5V supply. The single-supply MAX961, on the other hand, has
rise/fall times of 2.3ns.

TIA,

Martin.


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