Topic: Electronics Engineering
For CMOS implementation of input XOR logic gate, how many nMOS and pMOS transistors are required?
- A. 2 nMOS and 2 pMOS
- B. 3 nMOS and 3 pMOS
- C. 6 nMOS and 6 pMOS
- D. 8 nMOS and 8 pMOS
Answer: C. 6 nMOS and 6 pMOS
Explanation: Using transmission gate logic $Y = A\overline{B} + \overline{A}B$. For NOT gate one NMOS and 1 PMOS are required. The logic requires a minimum of 6 nMOS and 6 pMOS for a standard robust implementation.