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Q#1
Sequential Circuits
GATE EE 2022
NAT
+1 mark
-0 marks
The maximum clock frequency in MHz of a 4-stage ripple counter, utilizing flipflops, with each flip-flop having a propagation delay of 20 ns, is ___________. (round off to one decimal place)
Explanation:
Maximum propagation delay = ntpd = 4 × 20 ns = 80 ns
Clock period TCLK ≥ 80 ns
fCLK ≤ 1/80 ns
fCLK ≤ 12.5 MHz
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