Overview
The TJA1029T/2Z, produced by NXP USA Inc., is a Local Interconnect Network (LIN) transceiver designed to interface between the LIN master/slave protocol controller and the physical bus in a LIN network. It is primarily intended for in-vehicle subnetworks and is compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, SAE J2602, and ISO 17987-4:2016 (12 V) standards. This transceiver is optimized for automotive applications, offering excellent ElectroMagnetic Compatibility (EMC) performance and low ElectroMagnetic Emissions (EME).
Key Specifications
| Parameter | Value |
|---|---|
| Device Type | LIN Transceiver |
| Baud Rate | Up to 20 kBd |
| Supply Voltage Min | 5 V |
| Supply Voltage Max | 18 V |
| IC Case / Package | SOIC (8 pins) |
| IC Mounting | Surface Mount |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 125°C |
| Qualification | AEC-Q100 |
Key Features
- LIN 2.x/ISO 17987-4:2016 (12 V)/SAE J2602 compliant
- Very low ElectroMagnetic Emissions (EME)
- Very low current consumption in Sleep mode with remote LIN wake-up
- Input levels compatible with 3.3 V and 5 V devices
- Integrated termination resistor for LIN slave applications
- Passive behavior in unpowered state
- Operational during cranking pulse: full operation from 5 V upwards
- Undervoltage detection
- K-line compatible
- Available in SO8 and HVSON8 packages
- Dark green product (halogen free and RoHS compliant)
- Pin-compatible with TJA1020, TJA1021, TJA1022, and MC33662(B)
- Integrated TXD dominant time-out function to prevent permanent dominant state
- Very high ElectroMagnetic Immunity (EMI) and ESD robustness (±8 kV according to IEC 61000-4-2)
Applications
The TJA1029T/2Z is primarily used in automotive in-vehicle subnetworks, including various control units and sensors that require communication over the LIN bus. It is suitable for applications that demand low power consumption, high electromagnetic compatibility, and robust protection against transients and ESD. Typical applications include body control modules, door control units, and other automotive subsystems that need reliable LIN communication.
Q & A
- What is the primary function of the TJA1029T/2Z?
The TJA1029T/2Z acts as the interface between the LIN master/slave protocol controller and the physical bus in a LIN network, converting the data stream into an optimized bus signal and ensuring compliance with LIN and other relevant standards.
- What are the supported baud rates for the TJA1029T/2Z?
The TJA1029T/2Z supports baud rates up to 20 kBd.
- What are the supply voltage ranges for the TJA1029T/2Z?
The supply voltage ranges from 5 V to 18 V.
- What is the operating temperature range for the TJA1029T/2Z?
The operating temperature range is from -40°C to 125°C.
- Is the TJA1029T/2Z compliant with any specific automotive standards?
Yes, it is compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, SAE J2602, and ISO 17987-4:2016 (12 V) standards.
- What kind of protection does the TJA1029T/2Z offer?
The TJA1029T/2Z offers very high ElectroMagnetic Immunity (EMI), ESD robustness (±8 kV according to IEC 61000-4-2), and protection against transients in the automotive environment (ISO 7637).
- Can the TJA1029T/2Z be woken up from Sleep mode?
Yes, the TJA1029T/2Z can be woken up via pins LIN and SLP_N even in Sleep mode.
- What is the purpose of the integrated TXD dominant time-out function?
The integrated TXD dominant time-out function prevents the bus from being driven to a permanent dominant state.
- Is the TJA1029T/2Z pin-compatible with other LIN transceivers?
Yes, it is pin-compatible with the TJA1020, TJA1021, TJA1022, and MC33662(B).
- What are the available package types for the TJA1029T/2Z?
The TJA1029T/2Z is available in SO8 and HVSON8 packages.
