TJA1044T1

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, even without a common mode choke
• Variants with a VIO pin can be interfaced directly with microcontrollers with supply
voltages from 3.3 V to 5 V
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.