Isolated Auto-Polarity RS-485 Transceiver Reference Design

(ACTIVE) TIDA-00263

Description & Features

Technical Documents

Support & Training

Order Now


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


Description

This reference design demonstrates an isolated RS-485 bus node with automatic correction of a reversed bus signal polarity caused by cross-wire faults. The design provides transient protection protecting the signal path against ESD, EFT, and surge transients specified in the IEC 61000 family of transient immunity standards. An isolated DC-DC converter provides power supply across the isolation barrier utilizing the push-pull converter principle.

Features
  • 6kV peak isolation    
  • IEC 61000-4-2 up to 16kV    
  • IEC 61000-4-4 up to 4kV    
  • IEC 61000-4-5 up to 1kV    
  • Data rate up to 250kbps

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Test Data

Get results faster with test and simulation data that's been verified.

Download Test Data

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files


TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ISO7641FM  6kVpk Low Power Quad Channels, 150Mbps Digital Isolators  Isolation  Sample & Buy View Design Kits & Evaluation Modules
SN6501  Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
SN65HVD888  Bus-Polarity Correcting RS-485 Transceiver with IEC-ESD Protection  Interface  Sample & Buy View Design Kits & Evaluation Modules
TPS763  Low Iq, 150-mA, Low-Dropout Linear Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ISO7641FM Download Download
SN6501 Download Download
SN65HVD888 Download
TPS763 Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date
PDF 652 25 Jun 2014
Design files (3)
Title Abstract Type Size (KB) Date
ZIP 98 25 Jun 2014
PDF 104 25 Jun 2014
PDF 121 25 Jun 2014

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Blogs