Electronics and Communication Engineering - Digital Electronics - Discussion

Discussion Forum : Digital Electronics - Section 6 (Q.No. 34)
34.
A 4 bit synchronous counter has flip flops having propagation delay of 50 ns each and AND gates having propagation delay of 20 ns each. The maximum frequency of clock pulses can be
20 MHz
50 MHz
14.3 MHz
5 MHz
Answer: Option
Explanation:

Maximum delay = 50 + 20 = 70 x 10-9 s.

Hence .

Discussion:
1 comments Page 1 of 1.

Ska said:   5 years ago
shouldn't max delay be ( 50 + 20 + 20 ) ns? Please explain.

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