Voltage comparator

What it represents

Compares two analogue input voltages and produces the documented output-state indication.

On a schematic, identify the plus/minus voltage inputs, hysteresis and output driver type and trace the logic or switching output and any required pull-up. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.

A comparator output conveys a comparison result; an op amp operated without feedback is not universally an appropriate substitute.

Terminal letters describe electrical roles, not package pin numbers. Check the selected public datasheet for the actual pin assignment, polarity and any internally connected terminals before completing the drawing.

How to read it

• Identify the plus/minus voltage inputs, hysteresis and output driver type.
• Trace the logic or switching output and any required pull-up.

Information to show or reference

• Label the plus/minus voltage inputs, hysteresis and output driver type.
• Cross-reference the logic or switching output and any required pull-up.
• Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 14 October 2026