The one most significant difference between CMOS and NMOS is that the CMOS consumes low static power as compared to NMOS. NMOS is used to design several types of digital logic circuits such as microprocessors, memory chips, and many other MOS devices.įrom the above comparison, it is clear that the CMOS technology is best suited for designing embedded systems. The CMOS is used to design various types of digital logic circuits, microprocessors, microcontrollers, memories, etc. NMOS has comparatively low noise immunity. NMOS consumes relatively more static power. If it pass logic ‘1’, then it will have VT drop. The transmission gate of NMOS allows to pass only the logic ‘0’ well. The transmission gate of CMOS allows to pass both ‘0’ and ‘1’ logic well. Where, it requires 2N devices for N inputs. The power dissipates in NMOS, when its output is zero (0).įor CMOS, the power supply may vary from 1.5 V to 15 V.įor NMOS, the power supply is fixed depending on V DD.ĬMOS has less packing density. In case of CMOS, the power dissipation is zero, when it is in standby mode. The logic level of NMOS depends on the β ratio as well as noise margins. The NMOS performs its operation by making an inversion layer within a Ptype substrate. The CMOS performs its operation by employing symmetrical as well as complementary pairs of P-type and N-type MOSFETs. NMOS stands for N-channel Metal Oxide Semiconductor.Ī metal oxide semiconductor technology that combines both PMOS and NMOS technologies is called CMOS.Ī metal oxide semiconductor technology that uses N-type channel between source and drain terminals is called NMOS. However, there are several differences between CMOS and NMOS that are listed in the following table: Basis of DifferenceĬMOS stands for Complementary Metal Oxide Semiconductor. Difference between CMOS and NMOS Technologyīoth CMOS and NMOS are widely used metal oxide semiconductor technologies in microelectronic circuits. Also, the NMOS technology gives high speed because they have electrons as the charge carriers that have relatively high mobility. The NMOS technology is widely used in microprocessors and many other metal oxide semiconductor devices because they need smaller chip region and gives high density. In an NMOS, there is a layer, called N-channel layer, which conducts electrons between source and drain terminals. The NMOS technology is used to design a variety of microelectronic circuits that are used in logic chips and memory chips and also it is used as the part of CMOS (Complementary Metal Oxide Semiconductor) design. The NMOS uses N-type semiconductor material as the source and drain and a P-type semiconductor material as the substrate. NMOS is the abbreviation used for N-channel Metal Oxide Semiconductor. The CMOS technology is used in microprocessors, microcontrollers, memories, and many other digital logic circuits and analog circuits like data converters, sensors, communication devices, etc. CMOS provides high density of logic functions on a single chip.It has very low static power consumption.It reduces the complexity of the circuit.The other primary advantages of CMOS are as − The major advantage of a CMOS device is that it uses electrical power more efficiently. In a typical computer system, the system time and date and other hardware settings of a computer system are maintained by the CMOS IC. Basically, the CMOS or Complementary Metal Oxide Semiconductor is an onboard semiconductor chip power by a battery and is used for data storage in computing devices. The CMOS technology is one of the leading semiconductor technology because it consumes low power and has high immunity against electronic noise. The CMOS technology is a combination of PMOS and NMOS technology. The CMOS technology is widely used in manufacturing of ICs, digital logic circuits, microprocessors and microcontrollers, memories, etc. What is CMOS Technology?ĬMOS stands for Complementary Metal Oxide Semiconductor. But before discussing the differences, let's get a brief overview of what the CMOS and NMOS technologies are. In this tutorial, we will discuss the major differences between CMOS technology and NMOS technology. It is because the CMOS technology dissipates less power when compared to the bipolar and NOMOS technology. Nowadays, the CMOS technology is one of the leading semiconductor technology. There are two most popular MOS (Metal Oxide Semiconductor) technologies namely CMOS and NMOS which are widely used in the field electronics and power electronics such as in ASICs, memories, processors, etc.

Pmos vs nmos transistor