Overview
The TJA1145T/FDJ is a high-speed CAN (Controller Area Network) transceiver produced by NXP USA Inc. This component is designed to provide an interface between a CAN protocol controller and the physical two-wire CAN bus, making it ideal for high-speed CAN applications in the automotive industry. The TJA1145T/FDJ supports ISO 11898-2:2016 compliant CAN Partial Networking and features advanced power management, including selective wake-up functionality and low power consumption in Standby and Sleep modes.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 14-SOIC (0.154, 3.90mm Width) |
| Data Rate | Up to 2 Mbit/s |
| Voltage Supply | 4.5V to 5.5V |
| IO Levels | Automatically adjusted to 3.3 V to 5 V microcontrollers |
| ESD Protection | ±8 kV (HBM) on CAN bus pins, ±6 kV (IEC 61000-4-2) on BAT and WAKE pins |
| Short-Circuit Protection | CAN bus pins short-circuit proof to ±58 V |
| Transceiver Type | High-speed CAN transceiver for partial networking |
| Interface | 16-, 24-, or 32-bit SPI for configuration, control, and diagnosis |
| Compliance | ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-4 compliant |
| Mounting Type | Surface Mount |
| ROHS Status | ROHS3 Compliant |
Key Features
- ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-4 compliance
- Timing guaranteed for data rates up to 2 Mbit/s
- Autonomous bus biasing according to ISO 11898-2:2016
- Optimized for in-vehicle high-speed CAN communication
- No ‘false’ wake-ups due to CAN FD in TJA1145/FD variants
- Low power consumption in Standby and Sleep modes
- Local and/or remote wake-up functionality
- Transceiver disengages from the bus when the battery supply is removed
- VIO input allows for direct interfacing with 3.3 V to 5 V microcontrollers
- 16-, 24-, or 32-bit SPI for configuration, control, and diagnosis
- Transmit Data (TXD) dominant time-out function with diagnosis
- Overtemperature warning and shut-down
- Undervoltage detection and recovery on pins VCC, VIO, and BAT
- Cold start diagnosis (via bits PO and NMS)
- Advanced system and transceiver interrupt handling
Applications
The TJA1145T/FDJ is primarily designed for high-speed CAN applications in the automotive industry. It is suitable for use in various automotive systems that require reliable and efficient communication over the CAN bus, including:
- In-vehicle networks
- Automotive control units
- Advanced driver assistance systems (ADAS)
- Infotainment systems
- Other automotive applications requiring high-speed CAN communication
Q & A
- What is the primary function of the TJA1145T/FDJ?
The TJA1145T/FDJ is a high-speed CAN transceiver that provides an interface between a CAN protocol controller and the physical two-wire CAN bus.
- What are the supported data rates for the TJA1145T/FDJ?
The TJA1145T/FDJ supports data rates up to 2 Mbit/s.
- What are the voltage supply requirements for the TJA1145T/FDJ?
The voltage supply range is 4.5V to 5.5V.
- Does the TJA1145T/FDJ support CAN Partial Networking?
Yes, it supports ISO 11898-2:2016 compliant CAN Partial Networking with selective wake-up functionality.
- What kind of ESD protection does the TJA1145T/FDJ offer?
The TJA1145T/FDJ offers ±8 kV ESD protection according to the Human Body Model (HBM) on the CAN bus pins and ±6 kV ESD protection according to IEC 61000-4-2 on BAT and WAKE pins.
- How does the TJA1145T/FDJ handle bus biasing?
The TJA1145T/FDJ features autonomous bus biasing according to ISO 11898-2:2016.
- What interface does the TJA1145T/FDJ use for configuration and control?
The TJA1145T/FDJ uses a 16-, 24-, or 32-bit SPI interface for configuration, control, and diagnosis.
- Is the TJA1145T/FDJ compliant with any specific standards?
Yes, it is compliant with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-4 standards.
- What is the mounting type of the TJA1145T/FDJ?
The TJA1145T/FDJ is a surface mount component.
- Does the TJA1145T/FDJ support remote wake-up functionality?
Yes, it supports local and/or remote wake-up functionality.
