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A pulse train with a frequency of 1 MHz is counted using a modulo 1024 ripple-counter built with J-K flip-flops. For proper operation of the counter the maximum permissible propagation delay per flip-flop stage is
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- 100 n sec
- 50 n sec
- 20 n sec
- 10 n sec
Correct Option: A
Maximum frequency of 1 MHz corresponds to minimum time = 1/1 × 106 = 1 microsecond = 100 nanoseconds.
