Half-Duplex, Non-Isolated RS-485 BoosterPack Reference Design


Design files


The Half-Duplex, Non-Isolated RS-485 BoosterPack allows for easy evaluation of TI’s RS-485 transceivers for applications such as building management systems (BMS), factory automation, building automation, and HVAC. The BoosterPack is designed and tested to support data rates up to 1.25 Mbps for cable lengths up to 1000 feet and a total of 32 nodes. The populated extended common-mode RS-485 transceiver can be easily removed and replaced with any TI half-duplex, 8-pin SOIC RS-485 transceiver. This allows the system designer to evaluate many different transceivers with varying performance targets. The RS-485 BoosterPack is compatible with 20-pin and 40-pin TI LaunchPads.

  • Supports 1.25 Mbps data rates with cable lengths up to 1000 feet and a total of 32 nodes
  • Multiple configuration options: on-board or external power source, external data stimulus and monitoring, common-mode voltage injection, configurable failsafe and bus termination loading
  • Performance targets verified through a live test
  • Compatible with 20-pin or 40-pin TI LaunchPad
  • IEC 61000-4-2 (Electro Static Discharge) up to 15 KV
  • IEC 61000-4-4 (Electrical Fast Transients) up to 2 kV
  • IEC 61000-4-5 (Surge) from 500 to 1000 V
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

TIDU387.PDF (2841 K)

Reference design overview and verified performance test data

TIDR869.PDF (123 K)

Detailed schematic diagram for design layout and components

TIDR870.PDF (84 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDR871.PDF (297 K)

Detailed overview of design layout for component placement

TIDR873.ZIP (736 K)

Files used for 3D models or 2D drawings of IC components

TIDC506.ZIP (335 K)

Design file that contains information on physical board layer of design PCB

TIDR872.PDF (1198 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

RS-485 & RS-422 transceivers

SN65HVD24Extended Common-mode RS-485 Transceiver

Data sheet: PDF | HTML
Boost converters (integrated switch)

TPS612200.7-VIN, adjustable output voltage boost converter with 5.5-μA quiescent current

Data sheet: PDF | HTML

Start development


Technical documentation

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Type Title Date
* Design guide Half-Duplex Nonisolated RS-485 BoosterPack Design Guide Jun. 10, 2014
Technical article The secret to extending RS-485 communication performance PDF | HTML Jul. 24, 2015

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