Controller Area Network (CAN) With Selectable Termination Reference Design
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Key Document


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.

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

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD17483F4  30V, N ch NexFET MOSFET™, single LGA 1.0 x 0.6mm, 260mOhm  MOSFETs  Sample & Buy Not Available
CSD87502Q2  30V, N ch NexFET MOSFET™, dual SON2x2, 42mOhm  MOSFETs  Sample & Buy Not Available
TCAN1042-Q1  Automotive fault-protected CAN transceiver with flexible data-rate  Interface  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD87502Q2 WSON (DQK)| 6 Download
TCAN1042-Q1 Download Download
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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1643 14 Oct 2016
Design files (6)
Title Type Size (KB) Date
ZIP 368 10 Nov 2016
ZIP 239 10 Nov 2016
PDF 787 10 Nov 2016
PDF 39 10 Nov 2016
PDF 39 10 Nov 2016
PDF 76 10 Nov 2016

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