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RS-485/RS-422 Overview

Reliable, protected devices for long networks, high-data rates and noisy environments

Basic transceivers

3.3-V to 5-V transceivers optimized to meet the needs of cost-sensitive applications

High-ESD transceivers

Devices designed with ESD in mind: up to +30kV IEC 61000-4-2 contact discharge protection and greater than +30kV HBM protection

Fault-robust transceivers

Rugged devices with high bus fault-protection and wide common-mode voltage, designed to perform in harsh industrial environments

Isolated transceivers

Full-duplex and half-duplex isolated RS-485 transceivers with integrated capacitive isolation to provide 2.5-kVrms of isolation between the bus-line transceiver and the logic-level interface

Featured products

SN65HVD3082E

SN65HVD3082E

5-V, half-duplex RS-485 transceiver with up to 250 Kbps data rate

SN65HVD1781

SN65HVD1781

70-V fault-protected, 3.3-V to 5-V RS-485 transceiver with up to 1 Mbps data rate

SN65HVD78

3.3-V, half-duplex RS-485 with IEC ESD protection and up to 50 Mbps data rate

Technical resources

Training

Reference designs

On-demand RS-485 training, including overviews and in-depth presentations.

Watch and learn

Reference design

WEBENCH Interface Designer

Complete board-and system-level reference design circuits to help you quickly evaluate and customize your system.

View designs

Online support

Online support

Ask questions, share knowledge and help solve problems with fellow engineers in TI’s E2E™ Community

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Blog posts

Online support

Read about a wide variety of RS-485 system design topics in TI’s blogs.

Browse blog posts

Texas Instruments offers the most comprehensive RS-485 and RS-422 portfolio in the industry, meeting the RS-485 and RS-422 standards at 5V or 3.3V supply voltage and in half or full duplex modes. Whether designing for long networks or for high data rates, our RS-485 transceivers and RS-422 transceivers are reliable in high noise environments and give you the most robust IEC61000-4-2 ESD protection as well as IEC61000-4-4 EFT performance. The transceivers are ideal for many industrial applications, including motor drive and control, building and factory automation, metering and power infrastructure, and security systems.