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RS-485 / RS-232 Multiprotocol Transceiver Reference Design
TIDA-00540
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Description & Features

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Key Document

Description

This design (TIDA-00540) allows for communication over RS-485 or RS-232 data buses without requiring separate wiring for each.  Data lines are shared between two different transceiver types, and a single control signal is used to determine which protocol is to be used.

Features
  • Same interconnects can be used for both RS-485 and RS-232 communication
  • Easy control of active protocol
  • On-board TVS diodes for protection against overvoltage transients
  • Compact size and minimum number of components
  • This circuit is designed and tested, and its performance is documented in a test report.

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Schematic/Block Diagram

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Design Guide

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
SN65LBC180  Low-Power Differential Line Driver And Receiver Pair  Interface  Sample & Buy Not Available
TRS3223E  3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection  Interface  Sample & Buy Not Available
TRS3243E  3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection  Interface  Sample & Buy Not Available
TRS3318E  2.5-V 460-Kbps RS-232 Transceiver With +/-15-kV ESD Protection  Interface  Sample & Buy Not Available
TRS3386E  RS-232 Transceiver With Split Supply Pin for Logic Side  Interface  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
SN65LBC180 Download Download
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TRS3223E Download Download
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TRS3243E Download Download
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TRS3318E Download Download
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TRS3386E Download Download
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 308 25 Jun 2015
Design files (2)
Title Type Size (KB) Date
PDF 105 30 Jun 2015
PDF 538 30 Jun 2015

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