How nMOS can be used as NOR gate?

How nMOS can be used as NOR gate?

NMOS NOR GATE: The general NMOS inverter can be augmented to perform the logical NOR function by placing additional out put NMOS transistors in parallel with the output N-Channel MOSFET. Figure 9.1 shows a two input NMOS NOR gate with a generic load.

What does NOR gate do?

NOR gate in Electrical Engineering A NOR gate is a digital logic gate that gives an output of 0 when any of its inputs are 1, otherwise 1. NOR gates can be made to produce a variety of logic gates, including OR and AND gates. The output of the NOR gate is a logic 0 as long as the input voltage is below the threshold.

How do you write a NOR gate?

Logic NOR Gate Equivalent The Boolean expression for a logic NOR gate is denoted by a plus sign, ( + ) with a line or Overline, ( ‾‾ ) over the expression to signify the NOT or logical negation of the NOR gate giving us the Boolean expression of: A+B = Q.

What is a PMOS MOSFET?

PMOS or pMOS logic (from P-channel metal–oxide–semiconductor) is a family of digital circuits based on p-channel, enhancement mode metal–oxide–semiconductor field-effect transistors (MOSFETs).

How many MOSFETs are used in a CMOS NOR gate?

All that needs to be added is another stage of transistors to invert the output signal: A CMOS NOR gate circuit uses four MOSFETs just like the NAND gate, except that its transistors are differently arranged.

What are the applications of MOSFETs?

Power MOSFETs can be used to regulate DC motors. MOSFETs are used in the design of the chopper circuit. MOSFETs operate at greater efficiency at lower voltages. Absence of gate current results in high input impedance producing high switching speed. MOSFETs are vulnerable to damage by electrostatic charges due to the thin oxide layer.

What is the output voltage of the n-channel MOSFET?

The output voltage V 0 is then at 0 volt (logic 0 state) is applied at the input, the n-channel MOSFET Q2 is turned ON (with zero steady current) and Q1 is turned OFF. The output voltage V 0 is at -V DD (logic state 1).

What is the difference between a BJT and an MOSFET?

MOSFETs are controlled exclusively by gate voltage (with respect to substrate), whereas BJTs are current-controlled devices. TTL gate circuit resistances are precisely calculated for proper bias currents assuming a 5 volt regulated power supply.