Question

Find the mode of operation of the transistors in the following circuits. Clearly explain how you estimate the voltage of nodes (if any) that are not directly connected to Vdd or Gnd. You don't need to calculate the voltage of such nodes, but you should establish bounds on it that are strong enough to justify the mode of operation of all transistors. Assume all transistors are identical. M, V.

Answer 1

"We know that for p - type mos transistor 1 rightarrow off & 0 rightarrow 0N and for n - type mos transistor 0 rightarrow off & 1 rightarrow 0N It is a p - type and input given is GND (0) so it is working on ""oN"" condition V_DD = logic '1' Here both transistor are n - type and m_g is on because input is V_DD (1) and m_3 is off because input is GND (0) so circuit is not completed so it is in off mode Here M_4 & m_5 are both in ON condition because both transistor are n - type and input given is High (V_DD) . So it's working in ON mode "