Question

The average propagation delay of each NOR gate isb10 ns. The frequency of output signal Vo is___ Mhz

Answer 1

Given that T_pd=10 ns

we know that T_CLK should be >T_pd for getting correct o/p 

we know that Fout = $\frac{1}{T_{pd}}$

∴ T_CLK >T_pd

$\frac{1}{T_{CLK}} < \frac{1}{T_{pd}}$

F_out < $\frac{1}{T_{pd}}$

F_out < $\frac{1}{10 \;ns}$ ===> F_out < 100 MHZ