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INDIAN INSTITUTE OF TECHNOLOGY GUWAHATI
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1.Which of the following is NOT TRUE for a cross-coupled inverter circuit?
a) Output remains constant at either 1 or 0 for infinite time
b)The power reset operation results in a predictable output
c)One way of changing the output is by cutting the feedback loop open
d)The output can also be changed by overpowering the feedback loop
2.The problem of metastability in flip-flops can be avoided
a) if the data signal is held steady before the clock event for set-up time
b) if the data signal should be held steady after the clock event for hold time
c) only if both conditions given above are met
d) if a real time signal is given at the data input
3. For a negative latch, the output always remains stable during the
a) rising edge of the clock
b) falling edge of the clock
c) HIGH state of the clock
d) LOW state of the clock
4. Which of the following are TRUE about a dynamic latch? (a) It stores charge on parasitic capacitor. (b) It's output state is robust. (c) It operates through feedback. (d) It is faster and smaller.
a) (a) and (b)
b) (b) and (c)
c) (c) and (d)
d) (d) and (a)
5. In a dynamic latch, which of the following is NOT TRUE?
a) Output level is corrupted by the leakage current
b) Output level is corrupted by the charge sharing capacitors
c) Output level is corrupted by the clock feedthrough
d) Output level is corrupted by the initial conditions (voltage) across the load capacitance
