# RS-422 interface

Canonical URL: https://eloragrid.ai/symbols/rs-422-transceiver
Publisher: Elora Grid
Updated: 2026-10-27
Lookup label: RS422
Drawing use: Schematic
Reference families: Manufacturer

An RS-422 interface uses differential signalling for its selected serial connection.

## In plain English

### What does RS-422 interface mean?

An RS-422 interface uses differential signalling for its selected serial connection.

### A simple example

A controller can communicate through a suitable differential driver and receiver arrangement.

### What the drawings help you do

Identify the driver and receiver ends of the intended differential connection. Do not copy an RS-485 multi-driver bus arrangement just because both names refer to differential interfaces. The chosen parts and network design establish the permitted connections and direction of information flow.

### Before using this reference

- Identify each driver and its receivers.
- Reference the selected termination and cable arrangement.
- Show logic connections and the receiving equipment’s electrical reference.

### Is RS-422 interchangeable with an RS-485 bus?

Not automatically. Driver arrangements, permitted connections and device characteristics differ. Confirm the complete link rather than treating the interface names as equivalent wiring instructions.

### Terms

- Driver: The circuit that produces the electrical signal on a connection.
- Receiver: The circuit that interprets the incoming electrical signal.

Concept diagram: Logic-side serial data → RS-422 interface → Defined differential link
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.

- [RS-485 and RS-422 interfaces](https://www.ti.com/product-category/interface/rs-485-rs-422-transceivers/overview.html)


## What it represents

An RS-422 interface uses differential signalling for its selected serial connection.
A controller can communicate through a suitable differential driver and receiver arrangement.
Identify the driver and receiver ends of the intended differential connection. Do not copy an RS-485 multi-driver bus arrangement just because both names refer to differential interfaces. The chosen parts and network design establish the permitted connections and direction of information flow. This is original functional artwork, not a certified standard graphic or device pinout.

## How to read it

- Identify each driver and its receivers.
- Reference the selected termination and cable arrangement.
- Show logic connections and the receiving equipment’s electrical reference.
- An RS-422 label does not automatically imply an RS-485 multi-driver bus arrangement.

## Information to show or reference

- Identify each driver and its receivers.
- Reference the selected termination and cable arrangement.
- Show logic connections and the receiving equipment’s electrical reference.

## Important distinction

An RS-422 label does not automatically imply an RS-485 multi-driver bus arrangement.

## Facts

- Representation type: Original functional block; not a certified IEC or IEEE graphic
- Concept input: Logic-side serial data
- Concept output: Defined differential link

## Public references

- [RS-485 and RS-422 interfaces](https://www.ti.com/product-category/interface/rs-485-rs-422-transceivers/overview.html) — Texas Instruments. RS-485 and RS-422 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.