Overview
The TJA1020T/N/S490,11 is a Local Interconnect Network (LIN) transceiver produced by NXP USA Inc. This component serves as the interface between the LIN master/slave protocol controller and the physical bus in a Local Interconnect Network. It is primarily designed for in-vehicle sub-networks and supports baud rates from 2.4 to 20 Kbaud. The TJA1020T/N/S490,11 is optimized for automotive applications, adhering to the AEC-Q100 standard, and is known for its high electromagnetic immunity (EMI) and very low electromagnetic emission (EME).
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| VBAT (Supply Voltage on Pin BAT) | 5 | 12 | 27 | V |
| IBAT (Supply Current on Pin BAT in Sleep Mode) | 1 | 3 | 8 | µA |
| IBAT (Supply Current on Pin BAT in Standby Mode; Bus Recessive) | 100 | 400 | 1000 | µA |
| IBAT (Supply Current on Pin BAT in Normal Slope Mode; Bus Recessive) | 100 | 400 | 1000 | µA |
| IBAT (Supply Current on Pin BAT in Normal Slope Mode; Bus Dominant) | 1 | 3.5 | 8.0 | mA |
| VLIN (DC Voltage on Pin LIN) | -27 | +40 | V | |
| Tvj (Virtual Junction Temperature) | -40 | +150 | °C | |
| Baud Rate | 2.4 | 20 | Kbaud |
Key Features
- High Electromagnetic Immunity (EMI): The TJA1020T/N/S490,11 is designed to provide high EMI, ensuring reliable operation in noisy environments.
- Low Electromagnetic Emission (EME): It features very low EME, which is crucial for minimizing interference in automotive systems.
- Transmit Data (TXD) Dominant Time-Out Function: This function helps in managing the transmit data stream efficiently.
- Bus Terminal and Battery Pin Protection: The component includes protections against transients and short-circuits to battery and ground.
- Thermal Protection: The TJA1020T/N/S490,11 is thermally protected to prevent overheating and ensure long-term reliability.
- Operating Modes: It supports normal slope mode, low slope mode, and a very low power sleep mode, allowing for flexible and efficient operation.
Applications
The TJA1020T/N/S490,11 is primarily used in automotive applications, particularly in Local Interconnect Networks (LIN) within vehicles. It is suitable for various in-vehicle sub-networks that require reliable and efficient communication between different components. Some common applications include:
- Automotive body control modules
- Infotainment systems
- Lighting and comfort systems
- Other vehicle sub-systems requiring LIN communication
Q & A
- What is the primary function of the TJA1020T/N/S490,11?
The TJA1020T/N/S490,11 serves as the interface between the LIN master/slave protocol controller and the physical bus in a Local Interconnect Network (LIN).
- What are the supported baud rates for the TJA1020T/N/S490,11?
The component supports baud rates from 2.4 to 20 Kbaud.
- What is the significance of the low electromagnetic emission (EME) feature?
The low EME feature minimizes interference in automotive systems, ensuring reliable operation.
- How does the TJA1020T/N/S490,11 protect against transients and short-circuits?
The component includes protections against transients and short-circuits to battery and ground, as well as thermal protection.
- What are the different operating modes of the TJA1020T/N/S490,11?
The component supports normal slope mode, low slope mode, and a very low power sleep mode.
- What is the supply voltage range for the TJA1020T/N/S490,11?
The supply voltage range is from 5 to 27 volts.
- What is the virtual junction temperature range for the TJA1020T/N/S490,11?
The virtual junction temperature range is from -40 to +150 degrees Celsius.
- Is the TJA1020T/N/S490,11 compliant with any automotive standards?
Yes, it is compliant with the AEC-Q100 standard for automotive applications.
- What is the significance of the sleep mode in the TJA1020T/N/S490,11?
The sleep mode reduces power consumption to a very low level, which is beneficial for energy-efficient operation.
- How does the TJA1020T/N/S490,11 handle wake-up events?
The component has a local wake-up input and can be switched from sleep mode to normal operation based on specific conditions.
