![]() ![]() Why PMOS and NMOS are connected together?īecause the voltage between the Ground and the Source in the NMOS transistor has to be positive, so the logical choice is to connect the Source to the ground. When the input is high, n-MOS is ON and the output is pulled up to the supply voltage. What will be the effect on output voltage if the positions of n-MOS and p-MOS in CMOS inverter circuit are exchanged? Explanation: When the input is low, p-MOS is ON and the output is pulled down to the ground. In addition, the output signal oscillates the full voltage between low and high rail.READ ALSO: What happens if a pregnant woman gets diabetes? What will be the effect on output voltage if the position of NMOS and PMOS in CMOS inverter circuit are exchanged?Ĥ. Why do we use CMOS instead of PMOS and NMOS?Īn advantage of CMOS over NMOS logic is that both low-high and high-low output transitions are fast since the on-state (PMOS) pull-up transistors are in contrast to the load resistors in NMOS logic have a low resistance.
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