Question

Notify Me Bookmark

The circuit in the figure is a two-input CMOS logic gate. a) Find the voltage at the output for (IN1 = VDD, IN2 = VDD) and for (IN1 = 0, IN2 = 0). (2) b) Write the truth table for the circuit. Which is the logic function implemented by the circuit? (2) c) How much power does the circuit consume in the two conditions given in question a)? Justify your answer. (2)

The circuit in the figure is a two-input CMOS logic gate. a) Find the voltage at the output for (IN1 = VDD, IN2 = VDD) and for (IN1 = 0, IN2 = 0). (2) b) Write the truth table for the circuit. Which is the logic function implemented by the circuit? (2) c) How much power does the circuit consume in the two conditions given in question a)? Justify your answer. (2)

Image text
The circuit in the figure is a two-input CMOS logic gate. a) Find the voltage at the output for (IN1=VDD, IN2=VDD) and for ( I N 1 = 0 , I N 2 = 0 ) . (2) b) Write the truth table for the circuit. Which is the logic function implemented by the circuit? (2) c) How much power does the circuit consume in the two conditions given in question a)? Justify your answer. (2)

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

The circuit in the figure is a two-input CMOS logic gate. a) Under the assumption that EN = VDD, write the truth table for the circuit (where IN1 and IN2 are the input signals and OUT is the output signal). (2) b) Again with EN = VDD, which is the logic function implemented by the circuit? (2) c) What is the static power dissipation of the circuit? (2) d) What is the state of the circuit at the output if EN = 0? (2)
Solution
0 0

Consider the CMOS circuit in the figure, with 3 inputs, A, B and C, and 1 output, out. a) Write the truth table of the circuit. (3) b) Write the Boolean expression for the function implemented by the circuit. (2) c) Indicate the static power dissipation of the circuit. (2) d) Draw a NAND only implementation of the proposed circuit. (1)
Solution
0 0

P R O B LEM II. 6 a) Express F¯ in a simplified sum-of-products form given that F = AB¯+CD¯. b) Implement the logic function F = AB¯+CD¯ with an NMOS digital logic circuit that obeys the static discipline defined by the low-level and high-level logic thresholds VIL = VOL = VL and VIH = VOH = VH, respectively. Assume the supply voltage is VS, and that the on-state resistance of the NMOS transistors is RON. Determine the lowest value of the pull-up resistor RPU for which the circuit will obey the static discipline in terms of RON, VS, VL, and VH; not all variables need appear in your answer. c) Implement the logic function F = AB¯+CD¯ with a CMOS digital logic circuit. (Hint: make use of the result from part (a). ) d) Suppose that the NMOS and CMOS circuits above drive a capacitance CL. Assume that the on-state resistance of both the PMOS and NMOS transistors is RON. For both the NMOS and CMOS circuits determine the worst-case output rise time. For the purpose of this problem, assume that the worst-case output rise time is the time the output takes to go from 0 V to VH. Sketch the form of the output for both the NMOS and the CMOS circuit. e) Suppose that the inputs are arranged such that B = 1, C = 0, and D = 1, and that a 0−V to 5−V square-wave signal is applied to the input A. Assume the square wave cycle time is T, and that T is large enough so that the output comes close to its steady state value for both falling and rising transitions. Under these conditions, compute the power consumed by the CMOS and NMOS circuits when driving the capacitance CL load.
Solution
0 0