A synchronous MOD- 64 counter has t_pd= 14 ns for each flip- flop and t_pd= 12 ns for each AND gate. What is the maximum safe frequency for this counter? A) 38.45 MHz B) 83.33 MHz C) 500 MHz D) 71.43 MHz

Question

Quizplus · Accepted Answer

The maximum safe frequency for a synchronous counter is given by:f_max = 1 / (t_pd + t_setup + t_hold)where t_pd is the propagation delay of each flip-flop, t_setup is the setup time of each flip-flop, and t_hold is the hold time of each flip-flop.In this case, t_pd = 14 ns and t_setup = t_hold = 0 ns. Therefore, the maximum safe frequency is:f_max = 1 / (14 ns) = 71.43 MHzTherefore, the correct answer is A.

A Synchronous MOD- 64 Counter Has Tpd = 14 Ns

A Synchronous MOD- 64 Counter Has T_pd= 14 Ns