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TIDA-00060

Extended Common-mode Range RS-485 Reference Design

Design files

TIDA-00060

Design files

Overview

This reference design provides a 500kbps 5V RS-485 interface using the SN65HVD22 extended common-mode RS-485 transceiver.   The extended -20 V to 25 V Common-Mode Voltage Range, more than double the TIA/EIA-485 requirement, providing robust signal integrity and enabling use in long cable networks

Features
  • Wide common-mode range (-20V to 25V) enables use in long cable networks
  • More than 100mV receiver hysteresis - highly reliable in harsh environments
  • Low standby current: 1uA max
  • Failsafe receiver for open circuit, short circuit, and idle-bus conditions
  • This reference design is orderable
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Design files & products

Design files

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

download Test report — TIDA-00060
TIDU165.PDF (115 KB)

Test results for the reference design, including efficiency graphs, test prerequisites and more

download Bill of materials (BOM) — TIDA-00060
TIDR264.PDF (104 KB)

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

download Gerber file — TIDA-00060
TIDC184.ZIP (201 KB)

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

download Schematic — TIDA-00060
TIDR263.PDF (34 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

RS-485 & RS-422 transceivers

SN65HVD22 — Extended Common-mode RS-485 Transceiver

Data sheet: PDF | HTML

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Hardware

Evaluation board

SN65HVD22EVM — SN65HVD22EVM evaluation module

The SN65HVD22EVM evaluation module (EVM) helps you develop and analyze data transmission systems using our SN65HVD2x family of devices. This series of devices, including the SN65HVD20, SN65HVD21, SN65HVD22, SN65HVD23 and SN65HVD24, complies with TIA/EIA-485. These devices also use (...)

EVM user’s guide: PDF
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00060 — Extended Common-mode Range RS-485 Reference Design
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SN65HVD22EVM — SN65HVD22EVM evaluation module

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Reference design
TIDA-00060 — Extended Common-mode Range RS-485 Reference Design
TI’s Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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* Test report TIDA-00060 Test Results Sep 26, 2013

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