High Speed CAN Transceiver TJA1145ATK/FD/0Z CAN Interface IC

The TJA1145A is a high-speed CAN transceiver that 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 differential transmit and receive capability to (a microcontroller with) a CAN
protocol controller.
The TJA1145A features very low power consumption in Standby and Sleep modes and
supports ISO 11898-2:2016 compliant CAN Partial Networking by means of a selective
wake-up function.
A dedicated implementation of the partial networking function has been embedded into
the FD variants TJA1145AT/FD and TJA1145ATK/FD (see Section 7.3.2 for further details
on CAN FD). This function is called ‘FD-passive’ and is the ability to ignore CAN FD
frames while waiting for a valid wake-up frame in Sleep/Standby mode. This additional
feature of partial networking is the perfect fit for networks that support both CAN FD and
standard CAN 2.0 communications. It allows normal CAN controllers that do not need to
communicate CAN FD messages to remain in partial networking Sleep/Standby mode
during CAN FD communication without generating bus errors.
Advanced power management regulates the supply throughout the node and supports
local and remote wake-up functionality. I/O levels are automatically adjusted to the I/O
levels of the controller, allowing the TJA1145A to interface directly with 3.3 V to 5 V
microcontrollers. An SPI interface is provided for transceiver control and for retrieving
status information. Bus connections are truly floating when power is off.
The TJA1145A implements the CAN physical layer as defined in ISO 11898-2:2016 and
SAE J2284-1 to SAE J2284-5. This implementation enables reliable communication in the
CAN FD fast phase at data rates up to 5 Mbit/s.
These features make the TJA1145A the ideal choice for high-speed CAN networks
containing nodes that are always connected to the battery supply line but, in order to
minimize current consumption, are only active when required by the application.