Product details


Protocols CAN, CAN FD, SBC Number of channels (#) 1 Supply voltage (V) 5.5 to 30 Bus fault voltage (V) -58 to 58 Signaling rate (Max) (Mbps) 8 TI functional safety category Functional Safety Quality-Managed Rating Automotive Operating temperature range (C) -40 to 125 Low power mode Sleep Common mode voltage (V) -12 to 12 Isolated No open-in-new Find other CAN & LIN transceivers & SBCs

Package | Pins | Size

VQFN (RGY) 20 16 mm² 4.5 x 3.5 open-in-new Find other CAN & LIN transceivers & SBCs


  • AEC-Q100: qualified for automotive applications
    • Temperature grade 1: –40°C to 125°C TA
  • Functional safety quality-managed
    • Documentation available to aid functional safety system design up to ASIL-D/SIL-3
  • CAN FD controller with integrated CAN FD transceiver and serial peripheral interface (SPI)
  • CAN FD controller supports both ISO 11898-1:2015 and Bosch M_CAN Revision
  • Meets the requirements of ISO 11898-2:2016
  • Supports CAN FD data rates up to 8 Mbps with up to 18 MHz SPI clock speed
  • Classic CAN backwards compatible
  • Operating modes: normal, standby, sleep, and failsafe
  • 3.3 V to 5 V input/output logic support for microprocessors
  • Wide operating ranges on CAN bus
    • ±58 V bus fault protection
    • ±12 V common mode
  • Integrated low drop out voltage regulator suppling 5 V to CAN transceiver and up to 70 mA for external devices
  • Optimized behavior when unpowered
    • Bus and logic terminals are high impedance (No load to operating bus or application)
    • Power up and down glitch free operation
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The TCAN4550-Q1 is a CAN FD controller with an integrated CAN FD transceiver supporting data rates up to 8 Mbps. The CAN FD controller meets the specifications of the ISO11898-1:2015 high speed controller area network (CAN) data link layer and meets the physical layer requirements of the ISO11898–2:2016 high speed CAN specification. The TCAN4550-Q1 provides an interface between the CAN bus and the system processor through serial peripheral interface (SPI), supporting both classic CAN and CAN FD, allowing port expansion or CAN support with processors that do not support CAN FD. The TCAN4550-Q1 provides CAN FD transceiver functionality: differential transmit capability to the bus and differential receive capability from the bus. The device supports wake up via local wake up (LWU) and bus wake using the CAN bus implementing the ISO11898-2:2016 Wake Up Pattern (WUP).

The device includes many protection features providing device and CAN bus robustness. These features include failsafe mode, internal dominant state timeout, wide bus operating range and a time-out watchdog as examples.

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Technical documentation

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Type Title Date
* Data sheet TCAN4550-Q1 Automotive Control Area Network Flexible Data Rate (CAN FD) Controll datasheet (Rev. C) Aug. 21, 2020
Application note TCAN455x Clock Optimization and Design Guidelines Jul. 26, 2021
Certificate Automotive PPAP Documentation Jun. 18, 2021
Technical article How semiconductor technologies are changing automotive lighting roadmaps Oct. 24, 2019
Functional safety information TCAN4550-Q1 Functional Safety-Manual Jul. 23, 2019
Technical article Adding CAN nodes in Bluetooth® Low Energy PEPS systems Jun. 11, 2019
Technical article System basis chips 101 - A beginner's guide to CAN, CAN FD and LIN SBCs Jun. 10, 2019
User guide TCAN45xx Software User's Guide May 03, 2019
Application note Understanding LDO Performance in the TCAN4550-Q1 May 03, 2019
Application note TCAN4550 Watchdog Configuration Guide May 01, 2019
User guide SPI to CAN FD SBC + LIN Transceiver BoosterPack User's Guide Apr. 01, 2019
Technical article CAN & LIN: take a look inside Mar. 01, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The SPI to CAN FD SBC + LIN BoosterPack™ plug-in module features the TCAN4550-Q1 CAN FD controller with integrated transceiver providing microcontrollers without an integrated CAN FD controller, or those needing additional channels, access to CAN FD applications through a SPI interface (...)
  • TCAN4550-Q1 CAN FD controller with integrated transceiver and SPI interface
  • TLIN2029-Q1 fault protected LIN transceiver
  • TPS7B7702-Q1 automotive dual-channel LDO
  • Common DB9 connector for supply voltage, CAN FD, and LIN bus signals
  • Follows the BoosterPack pinout standard
document-generic User guide

The EVM can be used to evaluate the TCAN4550 SPI to CAN FD Controller and Transceiver solution.  The CAN bus signals are easily accessed via a DB9 connector (or via header pins), and the digital interface (SPI lines plus GPIOs) is accessible via a single dual-row header.  Input clocks to (...)

  • Provides access to CAN bus, SPI, clock, and all GPIO signals
  • Clock  input can be configured for on-board crystal or external clock source
  • CAN bus termination can be enabled/disabled via jumpers
  • Status LEDs indicate board power status and GPIO pin states

Software development

SLLC469B.ZIP (1176 KB)

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

ASIL D safety concept-assessed high-speed traction, bi-directional DC/DC conversion reference design
TIDM-02009 This reference design demonstrates control of HEV/EV traction inverter and bi-directional DC-DC converter by a single TMS320F28388D real-time C2000™ MCU. The traction control uses a software-based resolver to digital converter (RDC) driving the motor to a high speed up to 20,000 RPM. The DC-DC (...)
document-generic Schematic
Automotive RFCMOS 77GHz radar module reference design with object data output over dual CAN FD
TIDA-020004 — This reference design is a solution for a 76 to 81 GHz radar sensor module. The power supplies on board convert the automotive battery input to the required rails for the radar AFE, processors and CAN FD transceiver. All of these functions are included in a small form factor PCB suitable for front (...)
document-generic Schematic
Car access Bluetooth® low energy + CAN satellite module reference design
TIDA-020032 — This satellite module reference design is intended for Bluetooth® low energy passive entry passive start (PEPS) and phone as a key / digital key car access systems. The design demonstrates how control area network flexible data rate (CAN-FD) communication capabilities can be implemented with our (...)
document-generic Schematic
Reference design to demonstrate CAN FD communication on Hercules™ microcontrollers
TIDEP-01014 — This reference design showcases controller area network, flexible data-rate communication (CAN FD) on Hercules™ TMS570 microcontrollers using the TCAN4550 CAN FD controller. The interface between the TMS570 and the TCAN parts is done through a serial peripheral interface (SPI). This example (...)
document-generic Schematic

CAD/CAE symbols

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