1.

The pull-up to pull-down ratio for n-MOS inverter driven by another n- MOS inverter is

A. \(\frac{{{{\left( {{V_{td}}} \right)}^2}}}{{{{\left( {{V_{inv}} + {V_t}} \right)}^2}\;}}\)
B. \(\frac{{{{\left( { - {V_{td}}} \right)}^2}}}{{{{\left( {{V_{inv}} - {V_t}} \right)}^2}}}\)
C. \(\frac{{{{\left( {{V_{td}}} \right)}^2}}}{{\left( {{V_{inv}} - {V_t}} \right)}}\)
D. \(\frac{{{{\left( { - {V_{td}}} \right)}^2}}}{{\left( {{V_{inv}} - {V_t}} \right)}}\)
Answer» C. \(\frac{{{{\left( {{V_{td}}} \right)}^2}}}{{\left( {{V_{inv}} - {V_t}} \right)}}\)


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