3

PS8384D

06/26/01

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PI6C2308

3.3V Zero Delay Buffer

To close the feedback loop of the PI6C2308, the FBK pin can be

driven from any of the 8 available output pins. The output driving

theFBKpinwillbedrivingatotalloadof7pFplusanyadditionalload

that it drives. The relative loading of this output (with respect to the

remaining outputs) can adjust the input-output delay. This is shown

in the graph above.

Zero Delay and Skew Control

REF.InputtoCLKA/CLKBDelayvs.DifferenceinLoadingbetweenFBKpinandCLKA/CLKBpins

MaximumRatings

Supply Voltage to Ground Potential ...................–0.5Vto+7.0V

DC Input Voltage REF................................................ –0.5 to 7V

Storage Temperature ........................................ –65ºCto+150ºC

Maximum Soldering Temperature (10 seconds)................ 260ºC

Junction Temperature ....................................................... 150ºC

Static Discharge Voltage

(perMIL-STD-883,Method3015).................................. >2000V

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OperatingConditions

For applications requiring zero input-output delay, all outputs

including the one providing feedback should be equally loaded. If

input-output delay adjustments are required, use the above graph to

calculate loading differences between the feedback output and

remaining outputs.

600

800

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0

-200

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-1000

-25

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Output Load Difference: FBK Load - CLKA/CLKB Load (pF)

PI6C2308-1H

PI6C2308-1,2,3,4,6