Overview
The TJA1020T/VM,112 is a LIN (Local Interconnect Network) transceiver produced by NXP USA Inc. This component serves as the interface between the LIN master/slave protocol controller and the physical bus in automotive sub-networks. It is designed to support baud rates up to 20 Kbaud and is optimized for low electromagnetic emission (EME) and high electromagnetic immunity (EMI).
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 |
Key Features
- Baud rate up to 20 Kbaud
- Very low ElectroMagnetic Emission (EME)
- High ElectroMagnetic Immunity (EMI)
- Low slope mode for further reduction of EME
- Passive behavior in unpowered state
- Input levels compatible with 3.3 and 5 V devices
- Integrated termination resistor for Network (LIN) slave applications
- Wake-up source recognition (local or remote)
- Supports K-line like functions
- Very low current consumption in sleep mode with local and remote wake-up
- Transmit data (TXD) dominant time-out function
- Bus terminal and battery pin protected against transients
- Bus terminal short-circuit proof to battery and ground
- Thermally protected
Applications
The TJA1020T/VM,112 is primarily intended for in-vehicle sub-networks using baud rates from 2.4 to 20 Kbaud. It is suitable for various automotive applications where reliable and low-emission communication over the LIN bus is required. This includes body control modules, door control units, and other automotive subsystems that need to communicate via the LIN protocol.
Q & A
- What is the maximum baud rate supported by the TJA1020T/VM,112? The TJA1020T/VM,112 supports baud rates up to 20 Kbaud.
- What are the key features of the TJA1020T/VM,112 in terms of electromagnetic compatibility? The component has very low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI).
- How does the TJA1020T/VM,112 manage power consumption? It has very low current consumption in sleep mode with local and remote wake-up capabilities.
- What protection features does the TJA1020T/VM,112 have? It includes transmit data (TXD) dominant time-out function, bus terminal and battery pin protection against transients, bus terminal short-circuit proof to battery and ground, and thermal protection.
- Is the TJA1020T/VM,112 compatible with different voltage levels? Yes, it is compatible with 3.3 and 5 V devices.
- What is the purpose of the low slope mode in the TJA1020T/VM,112? The low slope mode further reduces the already very low emission in normal slope mode.
- How does the TJA1020T/VM,112 handle wake-up events? It supports local and remote wake-up source recognition.
- What is the typical operating temperature range for the TJA1020T/VM,112? The virtual junction temperature range is from -40°C to +150°C.
- What type of package does the TJA1020T/VM,112 come in? It comes in an 8-pin SOIC package.
- Is the TJA1020T/VM,112 suitable for automotive applications? Yes, it is optimized for in-vehicle sub-networks and meets automotive standards such as AEC-Q100.
