Overview
The TJA1029TK/20/1J 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 LIN network. It is primarily designed for in-vehicle subnetworks and is compliant with various LIN standards, including LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, SAE J2602, and ISO 17987-4:2016 (12 V).
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VBAT (Battery Supply Voltage) | Limiting values | -0.3 | - | +42 | V |
| VBAT (Battery Supply Voltage) | Operating range | 5 | - | 18 | V |
| IBAT (Battery Supply Current) | Sleep mode; VLIN = VBAT; VSLP_N = 0 V | 2.5 | 7 | 10 | μA |
| IBAT (Battery Supply Current) | Standby mode; VLIN = VBAT; VSLP_N = 0 V | 2.5 | 7 | 10 | μA |
| IBAT (Battery Supply Current) | Normal mode; VLIN = VBAT; VSLP_N = 5 V; VTXD = 5 V | 200 | 800 | 1600 | μA |
| VLIN (Voltage on pin LIN) | Limiting value with respect to GND and VBAT | -42 | - | +42 | V |
| VESD (Electrostatic Discharge Voltage) | On pin LIN; according to IEC 61000-4-2 | -8 | - | +8 | kV |
| Tvj (Virtual Junction Temperature) | Limiting value | -40 | - | +150 | °C |
| Baud Rate | - | - | - | Up to 20 kBd | |
| Package | - | - | - | SO8, HVSON8 | |
| Operating Temperature | - | -40 | - | +150 | °C |
Key Features
- LIN 2.x/ISO 17987-4:2016 (12 V)/SAE J2602 compliant.
- Baud rate up to 20 kBd.
- 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.
- Integrated TXD dominant time-out function to prevent the bus being driven to a permanent dominant state.
Applications
The TJA1029TK/20/1J is optimized for automotive applications, particularly in-vehicle subnetworks. It is used to connect various automotive components such as sensors, actuators, and control units within the vehicle's network. The component's compliance with LIN standards and its low electromagnetic emissions make it suitable for use in environments requiring high electromagnetic compatibility (EMC).
Q & A
- What is the TJA1029TK/20/1J used for?
The TJA1029TK/20/1J is used as the interface between the Local Interconnect Network (LIN) master/slave protocol controller and the physical bus in a LIN network, primarily in automotive applications.
- What standards is the TJA1029TK/20/1J compliant with?
The TJA1029TK/20/1J is compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, SAE J2602, and ISO 17987-4:2016 (12 V).
- What is the maximum baud rate supported by the TJA1029TK/20/1J?
The TJA1029TK/20/1J supports baud rates up to 20 kBd).
- What are the available package types for the TJA1029TK/20/1J?
The TJA1029TK/20/1J is available in SO8 and HVSON8 packages).
- How does the TJA1029TK/20/1J manage electromagnetic emissions?
The TJA1029TK/20/1J is designed to minimize ElectroMagnetic Emissions (EME), ensuring very low electromagnetic emissions).
- What is the power consumption in Sleep mode for the TJA1029TK/20/1J?
In Sleep mode, the TJA1029TK/20/1J has a very low current consumption, typically around 7 μA).
- Is the TJA1029TK/20/1J compatible with 3.3 V and 5 V devices?
Yes, the TJA1029TK/20/1J has input levels compatible with both 3.3 V and 5 V devices).
- 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).
- How does the TJA1029TK/20/1J handle undervoltage conditions?
The TJA1029TK/20/1J includes undervoltage detection to manage and respond to undervoltage conditions).
- Is the TJA1029TK/20/1J operational during cranking pulse?
Yes, the TJA1029TK/20/1J is operational during cranking pulse and provides full operation from 5 V upwards).
