Pass Transistor And Gate. The relation between input and output values can be explained using the and gate truth table shown below. Both pmos and nmos work simultaneously.
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Figure below shows the implementation of or function using nmos transistors only. Transistors are used as switches to pass logic levels between nodes of a circuit instead of as switches connected directly to supply voltages. This certainly is a major reduction in component count compared to the typical cmos two input and gate which requires six transistors.
For cascading the output of a pass transistor 1 should not drive the gate of another mos device 2.
The truth table of or gate is as shown in table below. The truth table of or gate is as shown in table below. For cascading the output of a pass transistor 1 should not drive the gate of another mos device 2. Both pmos and nmos work simultaneously.