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The AD96685 and AD96687 are ultrafast voltage comparators.The AD96685 is a single comparator with 2.5 ns propagaTIondelay; the AD96687 is an equally fast dual comparator. Bothdevices feature 50 ps propagaTIon delay dispersion which is aparTIcularly important characterisTIc of high-speed comparators.It is a measure of the difference in propagation delay underdiffering overdrive conditions.A fast, high precision differential input stage permits consistentpropagation delay with a wide variety of signals in the commonmoderange from –2.5 V to +5 V. Outputs are complementarydigital signals fully compatible with ECL 10 K and 10 KH logicfamilies. The outputs provide sufficient drive current to directlydrive transmission lines terminated in 50 Ω to –2 V. A levelsensitive latch input which permits tracking, track-hold, orsample-hold modes of operation is included.The AD96685 is available in industrial –25°C to +85°C rangein 16-pin SOIC.The AD96687 is available in industrial range –25°C to +85°C,in 16-pin DIP, SOIC, and 20-lead PLCC.
