Overview
The TJA1145AT/FD/0Z is a high-speed CAN (Controller Area Network) transceiver designed by NXP USA Inc. for applications in the automotive industry. This component provides a differential transmit and receive capability, interfacing between a CAN protocol controller and the physical two-wire CAN bus. It is compliant with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards, ensuring reliable communication in high-speed CAN networks, including CAN FD (Flexible Data Rate) communications up to 5 Mbit/s.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Voltage - Supply | 4.5V ~ 5.5V | Operating voltage range |
| Operating Temperature | -40°C ~ 150°C (TJ) | Junction temperature range |
| Mounting Type | Surface Mount | Package type |
| Compliance | ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5 | Standards compliance |
| CAN FD Data Rate | Up to 5 Mbit/s | Maximum data rate for CAN FD communications |
| Power Modes | Normal, Standby, Sleep, Overtemp, Off | Available operating modes |
| I/O Levels | 3.3 V to 5 V | Compatible I/O voltage levels |
Key Features
- Low Power Consumption: The TJA1145AT/FD/0Z features very low power consumption in Standby and Sleep modes, making it energy-efficient for automotive applications.
- CAN Partial Networking: Supports ISO 11898-2:2016 compliant CAN Partial Networking with a selective wake-up function, allowing nodes to remain in 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.
- Automatic I/O Level Adjustment: I/O levels are automatically adjusted to match the I/O levels of the controller, allowing direct interface with 3.3 V to 5 V microcontrollers.
- SPI Interface: Provides an SPI interface for transceiver control and retrieving status information.
- Fail-Safe and Diagnostic Features: Includes various fail-safe and diagnostic features to enhance system reliability.
- Bus Connections: Bus connections are truly floating when power is off, ensuring safe and reliable operation.
Applications
The TJA1145AT/FD/0Z is designed for high-speed CAN and CAN FD applications in the automotive industry. It is particularly suited for networks that require both standard CAN 2.0 and CAN FD communications. This transceiver is ideal for use in vehicles where nodes need to be always connected to the battery supply line but only active when required by the application, thus minimizing current consumption.
Q & A
- What is the TJA1145AT/FD/0Z used for?
The TJA1145AT/FD/0Z is a high-speed CAN transceiver used for interfacing between a CAN protocol controller and the physical two-wire CAN bus in automotive applications.
- What are the operating voltage and temperature ranges of the TJA1145AT/FD/0Z?
The operating voltage range is 4.5V ~ 5.5V, and the operating temperature range is -40°C ~ 150°C (TJ).
- Is the TJA1145AT/FD/0Z compliant with any specific standards?
Yes, it is compliant with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
- What is the maximum data rate for CAN FD communications supported by the TJA1145AT/FD/0Z?
The maximum data rate for CAN FD communications is up to 5 Mbit/s.
- What power modes are available for the TJA1145AT/FD/0Z?
The available operating modes are Normal, Standby, Sleep, Overtemp, and Off.
- How does the TJA1145AT/FD/0Z manage power consumption?
The TJA1145AT/FD/0Z features advanced power management, including very low power consumption in Standby and Sleep modes, and supports local and remote wake-up functionality.
- Can the TJA1145AT/FD/0Z interface with different I/O voltage levels?
Yes, the I/O levels are automatically adjusted to match the I/O levels of the controller, allowing direct interface with 3.3 V to 5 V microcontrollers.
- What interface is provided for transceiver control and status information retrieval?
An SPI interface is provided for transceiver control and retrieving status information.
- What safety features does the TJA1145AT/FD/0Z include?
The TJA1145AT/FD/0Z includes various fail-safe and diagnostic features to enhance system reliability, and bus connections are truly floating when power is off.
- Is the TJA1145AT/FD/0Z suitable for both CAN 2.0 and CAN FD communications?
Yes, it is designed to support both standard CAN 2.0 and CAN FD communications, making it ideal for networks that require both.
