IDT2308B データシートの表示（PDF） - Integrated Device Technology

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IDT2308B

3.3V ZERO DELAY CLOCK MULTIPLIER

Integrated Device Technology 

IDT2308B

3.3V ZERO DELAY CLOCK MULTIPLIER

COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES

ZERO DELAYAND SKEW CONTROL

To close the feedback loop of the IDT2308B, the FBK pin can be driven from any of the eight available output pins. The output driving the FBK pin

will be driving a total load of 7pF plus any additional load that it drives. The relative loading of this output (with respect to the remaining outputs) can adjust

the input-output delay.

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 Output Load Difference Chart to calculate loading differences between the feedback output and remaining outputs.

Ensure the outputs are loaded equally, for zero output-output skew.

REF TO CLKA/CLKB DELAY vs. OUTPUT LOAD DIFFERENCE BETWEEN FBK PIN AND CLKA/CLKB PINS

1500

1000

500

0

-30

-25

-20

-15

-10 -5 0

5

10

15

20

25

30

-500

-1000

-1500

OUTPUT LOAD DIFFERENCE BETWEEN FBK PIN AND CLKA/CLKB PINS ( pF)

4

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