Find a Boolean expression for the output of thisg CMOS circuit.

Question

BlackTom AI · Accepted Answer

First, let's identify the core function of the CMOS circuit shown. In a typical CMOS inverter, the output is the complement of the input: Out = NOT A. The diagram appears to depict the canonical arrangement of a CMOS inverter with a PMOS transistor connected to Vdd at the top and an NMOS transistor connected to ground at the bottom, both driven by the same input A, producing the standard inversion behavior at the output node.

Option 1: A' — This states that the output is the inverse (NOT) of A. In a CMOS inverter, when A = 0, the PMOS conducts and pulls the output high, and when A = 1, the NMOS conducts and pulls the output low. This is exactly the NOT relationship between Out and A. Therefore, this option correctly describes the circuit output in terms of A.

Option 2: No answer text provided. — This is not a description of the circuit behavior. It does not offer a valid Boolean expression or explanation, so it cannot be the correct characterization of the output.

Option 3: None of these — If the circuit is indeed a CMOS inverter producing NOT A, then A' is a valid expression for the output. Claiming none of these would be incorrect because there is a correct option among the given choices.

Option 4: A — This would imply the output equals the input, which contradicts the behavior of a CMOS inverter circuit where the output is the inverse of A. This option misrepresents the circuit function.

CSE-12-02 Quiz 2 : Basic CMOS, Truth Tables, Boolean Algebra

Find a Boolean expression for the output of thisg CMOS circuit.

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