Table of Contents

## What is CMOS NAND gate circuit?

Fig. 3.3 shows CMOS NAND Gate Circuit Diagram 2-input NAND gate. It consists of two P-channel MOSFETs, Q1 and Q2, connected in parallel and two N-channel MOSFETs, Q3 and Q4 connected in series.

**How many NAND gates are required for 2 input OR gate?**

It can take from 2 NAND gates (in case of AND gate) to 5 NAND gates (in case of XOR gate). For your convenience I have provided the implementations. Here circuit 2 is 2-input AND gate, circuit 3 is 2-input OR gate, circuit 4 is 2-input NOR gate, and circuit 5 is 2 input XOR gate.

### What is the IC number of 2 input NAND gate?

CMOS version The standard, 4000 series, CMOS IC is the 4011, which includes four independent, two-input, NAND gates.

**What is the circuit symbol of NAND gate?**

The Boolean expression for a logic NAND gate is denoted by a single dot or full stop symbol, ( . ) with a line or Overline, ( ‾‾ ) over the expression to signify the NOT or logical negation of the NAND gate giving us the Boolean expression of: A.B = Q.

## What is IC number of two input NAND gate?

**What is NAND gate IC number?**

NAND Gates, 7400, 74132.

### What is the minimum number of NAND gates required to implement a 2 input exclusive or function without using any other logic gate?

4

The number of 2-input NAND gates required to implement a 2-input XOR gate is 4.

**How can you realize and and OR gate by CMOS NAND gate?**

To build an inverter from NAND, simply connect the two inputs of the NAND together and use this junction as input of the inverter. Therefore an AND gate can be realized simply as a NAND followed by another NAND with 2 inputs tied together.

## How does a 2-input CMOS NAND gate behave?

The above drawn circuit is a 2-input CMOS NAND gate. Now let’s understand how this circuit will behave like a NAND gate. The circuit output should follow the same pattern as in the truth table for different input combinations. As V A and V B both are low, both the pMOS will be ON and both the nMOS will be OFF.

**How to design a logic gate using CMOS technology?**

NAND and NOR gate using CMOS Technology. For the design of any circuit with the CMOS technology; We need parallel or series connections of nMOS and pMOS with a nMOS source tied directly or indirectly to ground and a pMOS source tied directly or indirectly to V dd. A basic CMOS structure of any 2-input logic gate can be drawn as follows:

### What is the switching threshold voltage of CMOS 2-input NOR gate?

The output voltage of the CMOS, two input NOR gate will get a logic-low voltage of V OL = 0 and a logic-high voltage of V OH = V DD. The equation of the switching threshold voltage V th is given by The figure shows a sample layout of CMOS 2-input NOR gate, using single-layer metal and single-layer polysilicon. The features of this layout are −

**What are some simple circuit configurations for multiple inputs?**

We will examine simple circuit configurations such as two-input NAND and NOR gates and then expand our analysis to more general cases of multiple-input circuit structures. Next, the CMOS logic circuits will be presented in a similar fashion.