High-Speed CAN Transceiver with Standby Mode - Mantis Family

TJA1044

The TJA1044 is part of the Mantis family of high-speed CAN transceivers. It provides an interface between a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. The transceiver is designed for high-speed CAN applications in the automotive industry, providing the differential transmit and receive capability to (a microcontroller with) a CAN protocol controller.

The TJA1044 offers a feature set optimized for 12 V automotive applications, with significant improvements over NXP's first- and second-generation CAN transceivers, such as the TJA1040, and excellent ElectroMagnetic Compatibility (EMC) performance. Additionally, the TJA1044 features:

  • Ideal passive behavior to the CAN bus when the supply voltage is off
  • A very low-current Standby mode with bus wake-up capability
  • Excellent EMC performance at speeds up to 500 kbit/s, even without a common mode choke

These features make the TJA1044 an excellent choice for all types of HS-CAN networks, in nodes that require a low-power mode with wake-up capability via the CAN bus.

The TJA1044 implements the CAN physical layer as defined in the current ISO11898 standard (ISO11898-2:2003, ISO11898-5:2007 and the pending updated version of ISO 11898-2:2016). The TJA1044T is specified for data rates up to 1 Mbit/s. Pending the release of ISO11898-2:2016 including CAN FD and SAE-J2284-4/5, additional timing parameters defining loop delay symmetry are specified for the TJA1044GT and TJA1044GTK. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s.

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Block Diagram

TJA1044 Block Diagram

TJA1044 Block Diagram
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Features

General Features

  • Fully ISO 11898-2:2003 and ISO 11898-5:2007 compliant
  • Very low-current Standby mode with host and bus wake-up capability
  • Optimized for use in 12 V automotive systems
  • EMC performance satisfies 'Hardware Requirements for LIN, CAN and FlexRay Interfaces in Automotive Applications’, Version 1.3, May 2012
  • Can interface with 3.3 V and 5 V-supplied microcontrollers, provided the microcontroller I/Os are 5 V tolerant
  • AEC-Q100 qualified
  • Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)
  • Available in SO8 package and leadless HVSON8 package (3.0 mm x 3.0 mm) with improved Automated Optical Inspection (AOI) capability

Predictable and Fail-safe Behavior

  • Functional behavior predictable under all supply conditions
  • Transceiver disengages from bus when not powered (zero load)
  • Transmit Data (TXD) and bus dominant time-out functions
  • Internal biasing of TXD and STB input pins

Protection

  • High ESD handling capability on the bus pins (8 kV IEC and HBM)
  • Bus pins protected against transients in automotive environments
  • Undervoltage detection on pin VCC
  • Thermally protected

TJA1044GT/TJA1044GTK

  • Timing guaranteed for data rates up to 5 Mbit/s
  • Improved TXD to RXD propagation delay of 210 ns

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The TJA1044G is included in the 15-year program

Comparison Table

Part Number New Generation Recommendation
TJA1044GTJ TJA1044GT/1Z
TJA1044T,118 TJA1044GT/1Z
TJA1044T/1Z TJA1044GT/1Z

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