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Logic Families and Their Characteristics

Q1: Which of the following logic families has the shortest propagation delay?

A CMOS

B BiCMOS

C ECL

D 74SXX

ANS:C - ECL

Because ecl does not enter into saturation. It always operates in linear region. Hence it takes less time to do transition from one state to anouther state. (ie. , from high to low or viceversa).



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