# Isolated CAN transceiver

Canonical URL: https://eloragrid.ai/symbols/isolated-can-transceiver
Publisher: Elora Grid
Updated: 2026-10-27
Lookup label: ISO CAN
Drawing use: Schematic
Reference families: Manufacturer

An isolated CAN interface combines a CAN signal path with its specified electrical isolation barrier.

## In plain English

### What does Isolated CAN transceiver mean?

An isolated CAN interface combines a CAN signal path with its specified electrical isolation barrier.

### A simple example

A controller-side circuit can communicate with a bus-side circuit referenced to another electrical domain.

### What the drawings help you do

Show the controller domain, isolation boundary and bus domain explicitly. The CAN electrical interface is on the bus side, while logic signals cross the selected barrier. A complete diagram also accounts for bus-side power, termination and protection rather than treating isolation as the whole network design.

### Before using this reference

- Identify supply and reference for both domains.
- Show CAN controller signals and bus connections separately.
- Reference isolation, termination and bus-protection requirements.

### Does an isolated transceiver always include isolated power?

No. Some devices combine functions and others need a separate bus-side supply. The selected product documentation determines what power arrangement is included.

### Terms

- Bus domain: The circuit reference associated with the external CAN connection.
- Isolated power: A separately specified power path maintaining the required electrical separation.

Concept diagram: Controller-side CAN signals → Isolation and CAN interface → Bus-side CAN pair
Original functional explanation. Arrows show information or energy roles; two-headed arrows identify two-way interfaces. This is not a pinout, certified standards graphic or complete circuit.

- [Isolated communication interfaces](https://www.ti.com/product-category/isolation/isolated-interface-ics/overview.html)


## What it represents

An isolated CAN interface combines a CAN signal path with its specified electrical isolation barrier.
A controller-side circuit can communicate with a bus-side circuit referenced to another electrical domain.
Show the controller domain, isolation boundary and bus domain explicitly. The CAN electrical interface is on the bus side, while logic signals cross the selected barrier. A complete diagram also accounts for bus-side power, termination and protection rather than treating isolation as the whole network design. This is original functional artwork, not a certified standard graphic or device pinout.

## How to read it

- Identify supply and reference for both domains.
- Show CAN controller signals and bus connections separately.
- Reference isolation, termination and bus-protection requirements.
- The isolation barrier and any power supply for the bus side must be accounted for separately.

## Information to show or reference

- Identify supply and reference for both domains.
- Show CAN controller signals and bus connections separately.
- Reference isolation, termination and bus-protection requirements.

## Important distinction

The isolation barrier and any power supply for the bus side must be accounted for separately.

## Facts

- Representation type: Original functional block; not a certified IEC or IEEE graphic
- Concept input: Controller-side CAN signals
- Concept output: Bus-side CAN pair

## Public references

- [Isolated communication interfaces](https://www.ti.com/product-category/isolation/isolated-interface-ics/overview.html) — Texas Instruments. Isolated communication interfaces: public technical context for the named function. Product and compliance details remain with the publisher.

## 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.