# NAND gate

Canonical URL: https://eloragrid.ai/symbols/logic-nand-gate
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: NAND
Drawing use: Schematic
Reference families: Manufacturer

A logic gate that inverts the result of an AND operation.

## What it represents

A logic gate that inverts the result of an AND operation.
On a schematic, identify the input truth states and the output inversion indication and trace the output logic state and downstream input. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
The inversion bubble concerns logical polarity; it does not identify a normally-closed physical contact.
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 truth states and the output inversion indication.
- Trace the output logic state and downstream input.

## Information to show or reference

- Label the input truth states and the output inversion indication.
- Cross-reference the output logic state and downstream input.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

The inversion bubble concerns logical polarity; it does not identify a normally-closed physical contact.

## Facts

- Common schematic mnemonic: NAND — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The input truth states and the output inversion indication
- Artwork scope: Original educational component glyph; not a certified standard graphic or package pinout.

## Public references

- [SN74HC00 — NAND gate logic](https://www.ti.com/lit/ds/symlink/sn74hc00.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.