RS-485 Automatic Direction Control Reference Design

(ACTIVE) TIDA-01090

Description & Features

Technical Documents

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Key Document

Description

The TIDA-01090 reference design enables half-duplex communication over an RS-485 bus without requiring additional driver-enable/receiver-enable controls.  The design allows for the transceiver used on each node to go into transmit mode automatically when data is being transmitted from a local Microcontroller (MCU) or Universal Asynchronous Receiver/Transmitter (UART) and then transition back into receive mode once the data frame is complete.

Features
  • Automatically enables an RS-485 driver when data is output from an MCU or UART
  • Transitions RS-485 transceiver into receive mode when data is not being transmitted
  • Works with any RS-485 transceiver
  • Low-cost due to minimal number of components
  • Adjustable data frame length via passive component selection

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


  



Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
NA555  Precision Timers  Clock & timing  Sample & Buy Not Available
SN65HVD3082E  Half-duplex RS-485 transceiver  Interface  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
NA555 Download Download
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SN65HVD3082E Download Download
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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 2835 02 Jun 2016
Design files (6)
Title Abstract Type Size (KB) Date
ZIP 0 21 Jun 2016
ZIP 298 21 Jun 2016
PDF 421 21 Jun 2016
PDF 70 21 Jun 2016
PDF 96 21 Jun 2016
PDF 54 21 Jun 2016

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