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Discussion :: Digital Electronics

  1. A 4 bit ripple counter uses flip flops with propagation delay of 50 ns each. The maximum clock frequency which can be used is

    2. A.
    5 MHz
    B.
    10 MHz
    C.
    20 MHz
    D.
    25 MHz

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    Answer : Option A

    Explanation :

    Time delay = 50 x 4 x 10-9s,

    .

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