TIDA-01238

Controller Area Network (CAN) With Selectable Termination Reference Design

TIDA-01238

Design files

Overview

Typically in bus communication technologies, such as controller area network (CAN) and RS-485, the two farthest nodes in the network are terminated with 120Ω termination resistors and the other nodes are left unterminated. This process requires that the hardware designer know the layout of the end application, but that is not always the case, since the hardware designer is not necessarily the end user of the product.  TIDA-01238 documents and tests two individual circuits that make termination selectable at the individual CAN nodes, which makes placing termination at any node possible. Selectable termination takes the guess work out of network implementation by allowing any node to be the terminating node.

Features
  • Selectable termination from an MCU of steady-state source
  • Works with any CAN transceiver
  • Minimal number of components for cost-optimized design

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.

TIDUCF3.PDF (1643 K)

Reference design overview and verified performance test data

TIDRON5.PDF (76 K)

Detailed schematic diagram for design layout and components

TIDRON6.PDF (39 K)

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

TIDRON7.PDF (39 K)

Detailed overview of design layout for component placement

TIDRON9.ZIP (239 K)

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

TIDCCW1.ZIP (368 K)

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

TIDRON8.PDF (787 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

CAN & LIN transceivers & SBCs

TCAN1042-Q1Automotive fault-protected CAN transceiver with flexible data-rate

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD17483F430-V, N channel NexFET™ power MOSFET, single LGA 1 mm x 0.6 mm, 260 mOhm, gate ESD protection

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD87502Q230-V, N channel NexFET™ power MOSFET, dual SON 2 mm x 2, 42 mOhm, gate ESD protection

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide Selectable Termination for Controller Area Network (CAN) Systems Design Guide Oct. 14, 2016

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