General description 

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. 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 • TJA1044GT/3 and TJA1044GTK/3 can be interfaced directly to microcontrollers with supply voltages from 3 V to 5 V 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 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.

Features and benefits 

2.1 General  Fully ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 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.  AEC-Q100 qualified  Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)

 VIO input on TJA1044x/3 variants allows for direct interfacing with 3 V to 5 V microcontrollers. Variants without a VIO pin can interface with 3.3 V and 5 V-supplied microcontrollers, provided the microcontroller I/Os are 5 V tolerant.  Both VIO and non-VIO variants are available in SO8 and leadless HVSON8 (3.0 mm  3.0 mm) packages; HVSON8 with improved Automated Optical Inspection (AOI) capability. 2.2 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 2.3 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 pins VCC and VIO  Thermally protected 2.4 TJA1044 CAN FD (applicable to all product variants except TJA1044T)  Timing guaranteed for CAN FD data rates up to 5 Mbit/s  Improved TXD to RXD propagation delay of 210 ns