Final answer:
The CMOS circuit schematic of a 2-1 multiplexer involves NMOS and PMOS transistors, with the truth table indicating output selection based on a control signal. A high select signal (S) allows input B to pass through, and a low S lets input A pass to the output.
Step-by-step explanation:
The question pertains to the creation of a CMOS circuit schematic for a 2-1 multiplexer and its corresponding truth table. A 2-1 multiplexer is a digital switch that selects one of the two available inputs to be outputted based on a control signal.
CMOS Circuit Schematic
A typical CMOS 2-1 multiplexer uses NMOS and PMOS transistors to implement the logic. Here's how the CMOS circuit would be configured:
- Input lines: A and B (the two data inputs), and S (the select input).
- The NMOS transistors are connected in such a way that when S is high, Input B is passed to the output, and when S is low, Input A is passed to the output.
- The PMOS transistors work opposite to the NMOS transistors to ensure that the correct input is passed when S is high or low.
Truth Table
The truth table for a 2-1 multiplexer is:
SABOutput00X001X11X001X11
In the truth table, 'X' denotes a 'don't care' condition, meaning that the value of that input does not affect the output.