TJA1044T/1Z

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 TJA1042, and excellent ElectroMagnetic Compatibility (EMC) performance. These features make the TJA1044 an excellent choice for all types of HS-CAN, 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 ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5. The TJA1044T is specified for data rates up to 1 Mbit/s. Additional timing parameters defining loop delay symmetry are specified for the other variants. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s. The TJA1044B and TJA1044C feature shorter propagation delay, supporting larger network topologies.

Key features

• Fully ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5 and SAE J1939-14 compliant
• Very low-current Standby mode with local and bus wake-up capability
• Optimized for use in 12 V automotive systems
• Low Electromagnetic Emission (EME) and high Electromagnetic Immunity (EMI), according to proposed EMC Standards IEC 62228-3 and SAE J2962-2
• AEC-Q100 qualified
• Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)
• Variants with a V₁₀ pin allow for direct interfacing with 3.3 V to 5 V microcontrollers. Variants without a V₁₀ pin can interface with 3.3 V (except TJA1044C) and 5 V-supplied microcontrollers, provided the microcontroller I/Os are 5 V tolerant.
• Shorter propagation delay on the TJA1044B and TJA1044C variants supports larger network topologies
• Both V₁₀ and non-V₁₀ variants are available in SO8 and leadless HVSON8 (4.0 mm × 3.0 mm) packages; HVSON8 with improved Automated Optical Inspection (AOI) capability.
• Functional behavior predictable under all supply conditions
• Transceiver disengages from the bus (high-ohmic) when the supply voltage drops below the switch-off undervoltage threshold
• Transmit Data (TXD) dominant time-out functions
• Internal biasing of TXD and STB input pins
• Very low-current Standby mode with host and bus wake-up capability
• Variants with V₁₀ pin: CAN wake-up receiver powered by V₁₀ allowing VCC to be shut down
• Variants with V₁₀ pin and TJA1044C: CAN wake-up pattern filter time of 0.5 μs to 1.8 μs, meeting Classical CAN and CAN FD requirements
• High ESD handling capability on the bus pins (8 kV IEC and HBM)
• Bus pins protected against transients in automotive environments
• Undervoltage detection on pins VCC and V₁₀
• Thermally protected
• Timing guaranteed for CAN FD data rates up to 5 Mbit/s