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What is the maximum frequency of this circuit?

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ljxpjpjljx

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Re: maximum frequency

can you declare this problem more chearly?
 

sp3

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Re: maximum frequency

Hi,

Tha max freq is 91 MHz.

Thanks,
sp3
 

phoenix_pavan

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Re: maximum frequency

In the ckt C2 is skewed after C1 so

according to eqn

tw>=max tpffD1 + max tcombi + tsuD2 - mint of the gates affecting the clock 2

tw>=max tpffD1 + max tcombi + tsuD2 - mintinverters

tw>= 2ns + (1+1+1+2) + 3ns - (1+1)= 8ns

freq=125 Mhz
 

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