# Capacitive digital isolator

Canonical URL: https://eloragrid.ai/symbols/capacitive-digital-isolator
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: DIG-ISO
Drawing use: Schematic
Reference families: Manufacturer

Transfers digital information between separately referenced electrical domains through a capacitive isolation structure.

## What it represents

Transfers digital information between separately referenced electrical domains through a capacitive isolation structure.
On a schematic, identify the two domain supplies, channel directions and isolation boundary and trace the isolated data, enable and fault/status paths. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
A digital isolator transfers logic; it does not by itself provide an isolated power supply.
The preview is an independently drawn educational functional reference. Add the selected component’s actual power pins, terminal numbers, timing or analogue reference details when producing a construction drawing.

## How to read it

- Identify the two domain supplies, channel directions and isolation boundary.
- Trace the isolated data, enable and fault/status paths.

## Information to show or reference

- Label the two domain supplies, channel directions and isolation boundary.
- Cross-reference the isolated data, enable and fault/status paths.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

A digital isolator transfers logic; it does not by itself provide an isolated power supply.

## Facts

- Common schematic mnemonic: DIG-ISO — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The two domain supplies, channel directions and isolation boundary
- Artwork scope: Original educational functional/circuit reference; not a selected product pinout.

## Public references

- [ISO7741 — capacitive digital isolation](https://www.ti.com/product/ISO7741) — 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.