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CIRCUIT · CMOS LOGIC GATE CIRCUITS

CMOS Logic Gate Circuit Diagrams

Need to design CMOS logic gates? Our collection of CMOS circuit diagrams covers essential gates like NAND, NOR, XOR, and XNOR in 3-input configurations. Whether you're a student learning VLSI design or an engineer prototyping a new chip, these examples provide a solid starting point.

4 EXAMPLES· UPDATED 2026-08-09
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CMOS

3-Input CMOS NAND Gate Schematic

CMOS

3-Input CMOS NOR Gate Schematic

CMOS-LOGIC

CMOS 3-Input XNOR Gate

ELECTRONICS

CMOS 3-Input XOR Gate

ABOUT

About these examples.

Each diagram shows transistor-level CMOS implementation. Use our interactive generator to customize these circuits, adjust sizing, and create your own designs instantly.

Browse the gallery below to see high-quality schematics, then click 'Make your own' to start building your CMOS logic gate circuit diagram with our easy-to-use tool.

HOW TO

Make one yourself.

  1. 1

    Choose your gate type

    Select NAND, NOR, XOR, or XNOR from the library to start with a standard CMOS topology.

  2. 2

    Configure inputs

    Set the number of inputs (e.g., 3-input) and define the logic function you need.

  3. 3

    Customize the schematic

    Adjust transistor sizes (W/L ratios), add labels, and tweak the layout for your design requirements.

  4. 4

    Verify the pull-up/pull-down network

    Review the CMOS structure to ensure correct logic operation and performance.

  5. 5

    Generate and export

    Click generate to render your circuit diagram, then download as PNG or SVG for documentation or sharing.

FAQ

Frequently asked questions

What is a CMOS logic gate?01
A CMOS logic gate uses complementary pairs of p-type and n-type MOSFETs to implement logic functions with low power consumption.
How do I create a 3-input CMOS NAND gate?02
Place three PMOS transistors in parallel and three NMOS transistors in series; connect as shown in the example. The output is low only when all inputs are high.
Can I customize transistor sizing?03
Yes, our diagram generator allows you to specify W/L ratios for each transistor to meet performance targets like speed or drive strength.
Are these diagrams suitable for academic papers?04
Absolutely. You can export high-resolution SVG or PNG for inclusion in reports, theses, or presentations.
What other gate types are supported?05
Besides NAND, NOR, XOR, XNOR, you can build AND, OR, NOT, and complex gates by combining basic cells in the editor.
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