CMOS Inverter A CMOS inverter is a specific type of logic gate that inverts the output of a Boolean signal. It is an essential building block in digital cir...
CMOS Inverter
A CMOS inverter is a specific type of logic gate that inverts the output of a Boolean signal. It is an essential building block in digital circuits, used to convert a logical high to a logical low or vice versa.
A CMOS inverter consists of an NMOS transistor and a PMOS transistor connected together. The NMOS transistor acts as a "source" for electrons, while the PMOS transistor acts as a "drain" for electrons.
When a voltage is applied to the gate terminal of the NMOS transistor, it turns it on, allowing electrons to flow from the source to the drain. This current inversion effectively "switches off" the PMOS transistor, resulting in a flow of electrons from the drain to the source.
The output voltage of the CMOS inverter is now a logical low, while the input voltage is a logical high.
Example:
If the input voltage is 1 V, and the gate voltage is 5 V, the NMOS transistor will turn on, and the PMOS transistor will turn off.
This will cause the output voltage to become 0 V.
Conversely, if the input voltage is 0 V and the gate voltage is 5 V, the NMOS transistor will turn off, and the PMOS transistor will turn on.
This will cause the output voltage to become 1 V.
CMOS inverters are commonly used in various digital circuits, such as memory chips, logic gates, and digital circuits