# Logic inverter

Canonical URL: https://eloragrid.ai/symbols/logic-inverter
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: NOT
Drawing use: Schematic
Reference families: Manufacturer

Produces the opposite logical state of its defined digital input.

## What it represents

Produces the opposite logical state of its defined digital input.
On a schematic, identify the input/output polarity and logic supply domain and trace the inverted signal and receiving-device interface. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
A digital NOT gate inverts a logic state; an inverting analogue amplifier changes a continuous signal with a gain relationship.
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 input/output polarity and logic supply domain.
- Trace the inverted signal and receiving-device interface.

## Information to show or reference

- Label the input/output polarity and logic supply domain.
- Cross-reference the inverted signal and receiving-device interface.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

A digital NOT gate inverts a logic state; an inverting analogue amplifier changes a continuous signal with a gain relationship.

## Facts

- Common schematic mnemonic: NOT — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The input/output polarity and logic supply domain
- Artwork scope: Original educational component glyph; not a certified standard graphic or package pinout.

## Public references

- [SN74HC04 — digital inverters](https://www.ti.com/lit/ds/symlink/sn74hc04.pdf) — Texas Instruments. Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.