Overview
The TJA1043T/1J is a high-speed CAN (Controller Area Network) transceiver developed by NXP Semiconductors. It belongs to the third generation of high-speed CAN transceivers, offering significant improvements over earlier generations such as the TJA1041A. This transceiver provides 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. It features enhanced ElectroMagnetic Compatibility (EMC) and ElectroStatic Discharge (ESD) performance, very low power consumption, and passive behavior when the supply voltage is turned off.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC supply voltage | 4.5 | 5.5 | V | ||
| VIO supply voltage on pin VIO | 2.8 | 5.5 | V | ||
| Undervoltage detection voltage on pin VCC (Vuvd(VCC)) | 3 | 3.5 | 4.3 | V | |
| Undervoltage detection voltage on pin VIO (Vuvd(VIO)) | VBAT or VCC > 4.5 V | 0.8 | 1.8 | 2.5 | V |
| Supply current (ICC) | Normal mode; bus dominant | 30 | 48 | 65 | mA |
| Supply current (ICC) | Normal or Listen-only mode; bus recessive | 3 | 6 | 9 | mA |
| Supply current (ICC) | Standby or Sleep mode | 0 | 0.75 | 2 | μA |
| Supply current on pin VIO (IIO) | Normal mode; VTXD = 0 V (dominant) | - | 150 | 500 | μA |
| Supply current on pin VIO (IIO) | Normal or Listen-only mode; VTXD = VIO (recessive) | 0 | 1 | 4 | μA |
| Maximum operating temperature | 150 | °C (TJ) | |||
| Data rate | 5 | Mbps |
Key Features
- ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant, enabling reliable communication at data rates up to 5 Mbit/s in the CAN FD fast phase.
- Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI).
- VIO input allows for direct interfacing with 3 V and 5 V microcontrollers.
- SPLIT voltage output for stabilizing the recessive bus level.
- Listen-only mode for node diagnosis and failure containment.
- Available in SO14 and HVSON14 packages, with the HVSON14 package offering improved Automated Optical Inspection (AOI) capability.
- AEC-Q100 qualified and RoHS compliant, making it suitable for automotive applications.
- Low-power management with very low current in Standby and Sleep modes, supporting local and remote wake-up with wake-up source recognition.
- Several protection and diagnostic functions, including bus line short-circuit detection, battery connection detection, and thermal protection with diagnosis).
Applications
The TJA1043T/1J is primarily designed for high-speed CAN applications in the automotive industry. It is suitable for use in 12 V and 24 V systems and is ideal for nodes that need to be available at all times, even when the internal VIO and VCC supplies are switched off. Its advanced features and robust protection mechanisms make it a reliable choice for various automotive systems requiring high-speed CAN communication.
Q & A
- What is the TJA1043T/1J used for?
The TJA1043T/1J is a high-speed CAN transceiver used to provide an interface between a CAN protocol controller and the physical two-wire CAN bus in automotive applications.
- What are the key improvements of the TJA1043T/1J over earlier generations?
The TJA1043T/1J offers improved EMC and ESD performance, very low power consumption, and passive behavior when the supply voltage is turned off, among other enhancements.
- What is the data rate supported by the TJA1043T/1J?
The TJA1043T/1J supports data rates up to 5 Mbit/s in the CAN FD fast phase.
- What supply voltages can the TJA1043T/1J be interfaced with?
The TJA1043T/1J can be interfaced directly with microcontrollers having supply voltages from 3 V to 5 V.
- What are the packaging options for the TJA1043T/1J?
The TJA1043T/1J is available in SO14 and HVSON14 packages.
- Is the TJA1043T/1J compliant with automotive standards?
Yes, the TJA1043T/1J is AEC-Q100 qualified and RoHS compliant, making it suitable for automotive applications.
- What low-power modes does the TJA1043T/1J support?
The TJA1043T/1J supports Standby and Sleep modes with very low current consumption and supports local and remote wake-up with wake-up source recognition.
- What protection and diagnostic functions does the TJA1043T/1J offer?
The TJA1043T/1J includes several protection and diagnostic functions such as bus line short-circuit detection, battery connection detection, and thermal protection with diagnosis.
- How does the TJA1043T/1J handle ESD and EMC?
The TJA1043T/1J offers high ESD handling capability and improved EMC performance, ensuring robust operation in automotive environments.
- What is the maximum operating temperature of the TJA1043T/1J?
The maximum operating temperature of the TJA1043T/1J is 150°C (TJ).
