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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## Features
### General
* 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
