I modelled an XOR gate using HSPICE (Transistor level).Input voltage signal is 4V and Vdd of the circuit is 5V (threshold voltage= 1v).
While giving input voltage 4v I got Maximum output voltage swing as 5v, So my problem is I cant cascade the output of this XOR gate(5v) with another XOR gate beacause it will turn off cascaded transistors.
Don't you want the Pmos to turn on and off?
When its gate and source are both +5V then it is off. When the source is still +5V but its gate is 0V then it is turned on. What is the problem?