6) The drain-source voltages (magnitudes) of a and Q magnitudes) of Q and Qs are

Question

6) The drain-source voltages (magnitudes) of a and Q magnitudes) of Q and Qs are low CMOS gate: are high, while the drain-source voltages The objective b) When input v, is low while input v is high, select one of the following statements of this question is to investigate the operation of the four MOSFETs for all combinations of the inputs, V and v and to deduce the type of the gate. 1) a and are off, while Q and Q4 are on 2) a, and Q are on, while Qs and Q are off 3) a and are off, while Q and 04 are on 4) a and are on, while az and are off 5) a. and are off, while Q and a are on 6) a and , are on, while a and are off c) When input vi is low while input va is high, select one of the following statements: 1) The drain-source voltages (magnitudes) of a and are low, while the drain-source voltages magnitudes) of and Q are high 2) The drain-source voltages (magnitudes) of a and Q are high, while the drain-source voltages magnitudes) of as and Q are low 3) The drain-source voltages (magnitudes) of a and Q are low, while the drain-source voltages magnitudes) of a: and Q are high 4) The drain-source woltages (magnitudes) of Q: and Q are high, while the drain-source voltages magnitudes) of az and Q are low 5) The drain-source voltages (magnitudes) of a, and Q are low, while the drain-source voltages magnitudes) of a and Qs are high 6) The drain-source voltages (magnitudes) of a and Q, are high, while the drain-source voltages magnitudes) of a and Qs are low out 0 d) When the two inputs, vi and v are both high, select one of the following statements: 1) a and are off, while Qs and 04 are on 2) a and are on, while as and are off 3) a and are off, while Q and d4 are on 4) a and Q are on, while a and O are off 5) a and Q are off, while Q and d are on 6) a and a are on, while a and O are off a) when the two inputs, vand v2 are both low, select one of the following statements 1) The drain-source voltages (magnitudes) of Q and Q are low, while the drain-source voltages magnitudes) of Qand Q are high 2) The drain-source voltages (magnitudesof Q and a are high, while the drain-source voltages magnitudes) of Q and Q are low 3) The drain-source voltages (magnitudes)of Q and a are low, while the drain-source voltages magnitudes) of aa and Q are high 4) The drain-source voltages (maenitudes) of Q. and Q are high, while the drain-source voltages magnitudes) of Q and Q are low 5) The drain-source voltages (magnitudes) of Q and Q are low, while the drain-source voltages magnitudes) of a and Q are high sdussthe type of this digital gate. 1) AND gate 2) NAND gate 3) OR gate 4) NOR sate 5) XOR Eate

Explanation / Answer

a) (2) is correct option. V1 =0 and V2=0 will turn off Q1 and Q2 and turn on Q3 and Q4. so, voltage across drain-source of Q1 and Q2 are high and those of Q3 and Q4 are low.

b)  (3) is correct option. A low at gate will turn on PMOs transitor and high at gate turns on NMOs transistior. V1=0 will turn on PMOS transisitor Q4 connected to it. V2=1 will turn on NMOS transitior Q2 connected to it. others are off.

c)   (4) is correct option. Q2 and Q4 are on and their Vds will be low, Q1 and Q3 are off so that their Vds are high.

d) (2) is correct option. V1 =1 and V2=1 will turn on both NMos Q1 and Q2, others are off.

e) (4) is correct option. as NMOs (lower level transistors) are in parallel and output is inverted, its NOR gate

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