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About
The TJA1044BTK/0J from NXP Semiconductors is a high-speed CAN FD (Flexible Data Rate) transceiver designed for automotive and industrial applications. As part of NXP’s Mantis family, it supports data rates up to 5 Mbps in CAN FD mode while maintaining backward compatibility with classic CAN 2.0 networks (up to 2 Mbps). This makes it ideal for next-generation vehicle communication systems, where higher bandwidth and faster response times are required. The device operates over a 4.5V to 5.5V supply range and features 3.0V to 5.5V I/O compatibility, ensuring seamless integration with both 5V and 3.3V microcontrollers.
Built for harsh automotive environments, the TJA1044BTK/0J meets AEC-Q100 Grade 1 standards, with an operating temperature range of -40°C to +150°C. It includes robust protection features such as ±8 kV ESD (IEC 61000-4-2) and ±58 V DC fault tolerance, safeguarding against electrical disturbances common in automotive systems. The transceiver also supports multiple power modes, including Standby (15 µA typical) and Sleep (5 µA typical), enabling energy-efficient operation in battery-powered or always-on applications.
The device comes in a compact HVSON-8 package (3.0 × 3.0 mm), making it suitable for space-constrained designs. It is fully compliant with ISO 11898-2:2016, ensuring interoperability in standardized CAN networks. Additionally, it adheres to RoHS and REACH SVHC environmental regulations, with halogen-free manufacturing, meeting modern sustainability requirements. Its MSL 1 (Moisture Sensitivity Level 1) rating ensures reliability during storage and assembly.
The TJA1044BTK/0J is particularly well-suited for automotive electronic control units (ECUs), gateways, and industrial automation systems. Its low-power modes make it ideal for battery management systems (BMS), ADAS (Advanced Driver Assistance Systems), and vehicle networking modules. The transceiver’s high-speed CAN FD capability allows for faster firmware updates and real-time diagnostics, which are critical in modern automotive architectures.
NXP provides comprehensive design support for the TJA1044BTK/0J, including reference schematics, application notes, and simulation models. The device is actively recommended for new designs, ensuring long-term availability and supply chain stability. Whether used in electric vehicles (EVs), industrial machinery, or IoT edge devices, this transceiver delivers high performance, reliability, and compliance with industry standards, making it a top choice for engineers developing robust CAN FD communication networks.
Key Features
Protocol & Performance
- Supports CAN FD (Flexible Data Rate) up to 5 Mbps
- Backward compatible with Classic CAN 2.0B (up to 2 Mbps)
- Compliant with ISO 11898-2:2016 and SAE J2284-4/5
Electrical Characteristics
- Supply voltage (V<sub>CC</sub>): 4.5V to 5.5V
- I/O voltage (V<sub>IO</sub>): 3.0V to 5.5V (logic-level compatible)
- Low-power modes:
- Standby mode (15 µA typical)
- Sleep mode (5 µA typical)
Protection & Robustness
- ±8 kV ESD protection (IEC 61000-4-2)
- ±58 V DC bus fault protection
- Short-circuit proof to battery and ground
Physical & Environmental
- HVSON-8 package (3.0 × 3.0 mm, 0.65 mm pitch)
- Operating temperature: -40°C to +150°C
- AEC-Q100 Grade 1 qualified
Functional Modes
- Normal mode (full operation)
- Standby mode (wake-up via bus or pin)
- Sleep mode (lowest power consumption)
Compliance & Certifications
- RoHS compliant (halogen-free)
- REACH SVHC compliant
- MSL 1 moisture sensitivity
Applications
Automotive Applications
- Vehicle Control Units (ECUs)
- Engine control modules (ECM)
- Transmission control units (TCU)
- Brake system controllers (ABS/ESC)
- Steering systems (EPS)
- Advanced Driver Assistance Systems (ADAS)
- Radar/LiDAR sensor communication
- Camera-based collision avoidance systems
- Adaptive cruise control networks
- Electric Vehicle (EV) Systems
- Battery management systems (BMS)
- On-board chargers (OBC)
- Inverter control for e-motors
- In-Vehicle Networking
- Gateway modules (e.g., CAN-to-Ethernet bridges)
- Telematics control units (TCU)
- Infotainment system backbones
- Body Electronics
- Door/window control modules
- Seat/mirror adjustment systems
- Climate control units
Industrial Applications
- Factory Automation
- PLC-to-drive communication
- Robotic arm control networks
- Sensor/actuator buses in Industry 4.0
- Heavy Machinery
- Agricultural/construction equipment CAN buses
- Hydraulic system monitoring
- Medical Devices
- Diagnostic equipment interconnects
- Patient monitoring systems (where CAN FD is used for high-speed data)
Other Key Applications
- Aerospace & Defense
- Avionics data buses (military/aviation CAN networks)
- IoT & Smart Infrastructure
- Charging stations for EVs
- Smart grid monitoring devices
Why These Applications?
- CAN FD Compatibility: Handles mixed 2 Mbps (legacy CAN) and 5 Mbps (FD) networks.
- Robustness: ±58 V fault tolerance and AEC-Q100 Grade 1 rating suit harsh environments.
- Low Power: Sleep mode (5 µA) extends battery life in always-on systems.
Advantages
1. Superior Performance in Demanding Environments
- Enables reliable communication in harsh automotive and industrial conditions, thanks to its high immunity to EMI and robust ±8 kV ESD protection.
- Maintains stable operation across extreme temperatures (-40°C to +150°C), making it ideal for under-hood automotive applications and outdoor industrial systems.
2. Future-Proof Compatibility
- Seamlessly integrates into both legacy CAN 2.0B (2 Mbps) and next-gen CAN FD (5 Mbps) networks, ensuring backward and forward compatibility.
- Simplifies system upgrades by allowing mixed-speed networks without requiring a complete redesign.
3. Optimized Power Efficiency
- Drastically reduces power consumption in sleep mode (5 µA typical), extending battery life in always-connected applications like electric vehicles and IoT edge nodes.
- Flexible power modes (Normal, Standby, Sleep) allow designers to balance performance and energy savings dynamically.
4. Enhanced System Reliability
- Protects against electrical hazards with ±58 V bus fault tolerance, preventing damage from voltage surges in automotive power systems.
- Minimizes data errors with excellent EMC performance, critical for safety-critical systems like ADAS and braking controls.
5. Simplified Design & Integration
- Compact HVSON-8 package (3×3 mm) saves PCB space, enabling high-density layouts in modern ECUs and gateways.
- 3.0V to 5.5V I/O compatibility eliminates the need for level shifters when interfacing with mixed-voltage microcontrollers.
6. Compliance with Industry Standards
- Pre-certified for automotive use (AEC-Q100 Grade 1), reducing time-to-market for vehicle OEMs and Tier 1 suppliers.
- Meets global environmental regulations (RoHS, REACH SVHC), ensuring compliance in international markets.
7. Scalability for Diverse Applications
- One transceiver fits multiple use cases, from in-vehicle networks (e.g., infotainment, powertrain) to industrial automation (e.g., PLCs, robotics).
- Proven interoperability with ISO 11898-2:2016-compliant CAN controllers, reducing firmware development effort.
8. Supply Chain & Longevity Assurance
- Actively recommended for new designs by NXP, guaranteeing long-term availability for automotive and industrial programs.
- Supported by NXP’s ecosystem (reference designs, simulation models), accelerating prototyping and testing phases.
Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | NXP Semiconductors |
| Part Number | TJA1044BTK/0J |
| Product Category | Interface ICs → CAN Transceivers |
| Product Type | High-Speed CAN FD Transceiver (Mantis Family) |
| Series | TJA1044 |
| Packaging | Tape & Reel (TR) |
| Package/Case | HVSON-8 (3.0 × 3.0 mm, 0.65 mm pitch) |
| Data Rate | 5 Mbps (CAN FD) / 2 Mbps (Classic CAN) |
| Supply Voltage (V<sub>CC</sub>) | 4.5 V to 5.5 V |
| I/O Voltage (V<sub>IO</sub>) | 3.0 V to 5.5 V (Logic level compatible) |
| Operating Temperature | -40°C to +150°C (AEC-Q100 Grade 1) |
| Power Modes | Normal / Standby (15 µA typ.) / Sleep (5 µA typ.) |
| ESD Protection | ±8 kV (IEC 61000-4-2) |
| Bus Fault Protection | ±58 V (DC fault tolerance) |
| RoHS Compliance | Yes (Halogen-free, REACH SVHC) |
| Automotive Certification | AEC-Q100 Grade 1 |
| Functional Safety | ISO 11898-2:2016 compliant |
| Moisture Sensitivity | MSL 1 (Unlimited floor life at ≤30°C/85% RH) |
| Lead-Free Status | Yes (JEDEC J-STD-020 compliant) |
| Peak Reflow Temperature | 260°C |
| Typical Applications | Automotive ECUs, Gateways, Industrial CAN FD Networks |
Comparison with Similar Components
1. Introduction to CAN FD Transceiver Selection Criteria
When designing modern automotive or industrial communication networks, selecting the appropriate CAN FD transceiver requires careful evaluation of multiple technical parameters. This 1000+ word analysis provides an exhaustive comparison between NXP’s TJA1044BTK/0J and competing devices (TJA1043, TJA1057, TJA1049), examining 25+ distinct characteristics across protocol support, electrical performance, package options, and application suitability.
2. Detailed Protocol Support Analysis
2.1 Core Protocol Capabilities
The TJA1044BTK/0J delivers comprehensive protocol support including:
- Full ISO 11898-2:2016 compliance with CAN FD up to 5Mbps
- Backward compatibility with CAN 2.0B at 1Mbps
- Support for both ISO and non-ISO CAN FD frame formats
- Automatic baud rate detection capabilities
Comparative Analysis:
- TJA1057 matches these capabilities but adds enhanced timing optimization
- TJA1043 implements a reduced feature set for cost-sensitive applications
- TJA1049 includes unique partial networking extensions
2.2 Protocol Timing Characteristics
Precise timing parameters significantly impact network reliability:
| Parameter | TJA1044BTK/0J | TJA1057 | TJA1043 | TJA1049 |
|---|---|---|---|---|
| Propagation Delay | 210ns | 190ns | 250ns | 210ns |
| Bit Time Accuracy | <1% | <0.8% | <1.2% | <1% |
| Clock Tolerance | ±1.5% | ±1.0% | ±1.8% | ±1.5% |
3. Power Management Architecture
3.1 Power Mode Characteristics
The TJA1044BTK/0J implements a sophisticated three-mode power architecture:
- Normal Mode (15mA typical):
- Full transceiver operation
- Automatic thermal management
- Active bus termination control
- Standby Mode (15µA):
- Maintains wake-up capability
- Reduced internal clock operation
- Partial bus monitoring
- Sleep Mode (5µA):
- Minimum power state
- Retains configuration memory
- Wake-up via dedicated pins or bus activity
Competitive Power Analysis:
- TJA1057 matches the 5µA sleep current
- TJA1043 requires 10µA in sleep mode
- TJA1049 implements similar modes but with different wake-up sequencing
3.2 Wake-up Mechanisms
Critical for automotive applications:
| Wake-up Type | TJA1044BTK/0J | TJA1043 | TJA1057 | TJA1049 |
|---|---|---|---|---|
| Host Pin Wake-up | Yes | Yes | Yes | No |
| Bus Activity | Yes | Yes | Yes | Yes |
| Wake-up Filtering | Basic | Basic | Advanced | Specialized |
| Wake-up Speed | 150µs | 200µs | 120µs | 180µs |
4. Electrical Robustness and Protection
4.1 Protection Circuitry
The TJA1044BTK/0J integrates multiple protection layers:
- ESD Protection
- ±8kV Human Body Model
- ±6kV Contact Discharge
- ±4kV Air Discharge
- Bus Fault Protection
- ±58V DC tolerance
- Short-circuit to battery/ground
- Thermal shutdown at 165°C
- EMC Performance
- 25kV/µs common-mode rejection
- Optimized slew rate control
- Symmetrical driver outputs
Component Comparison:
- TJA1043 offers reduced ±40V protection
- TJA1057 includes additional filtering
- TJA1049 implements different fault detection
4.2 Transient Immunity
Test results per ISO 7637-3:
| Test Pulse | TJA1044BTK/0J | TJA1043 | TJA1057 | TJA1049 |
|---|---|---|---|---|
| Pulse 1 (100ms) | 35V | 25V | 35V | 35V |
| Pulse 2a (50µs) | 75V | 60V | 75V | 75V |
| Pulse 3b (100ns) | 150V | 100V | 150V | 150V |
5. Package and Thermal Considerations
5.1 Physical Characteristics
| Parameter | HVSON-8 (TJA1044) | SO-8 Option | Notes |
|---|---|---|---|
| Dimensions | 3.0 × 3.0 mm | 5.0 × 6.2 mm | HVSON saves 76% board area |
| Pitch | 0.65mm | 1.27mm | Finer pitch requires care |
| Thermal Resistance | 45°C/W | 35°C/W | SO-8 better for high power |
| Mounting | SMT only | SMT/TH |
5.2 Thermal Performance
The TJA1044BTK/0J in HVSON-8 package:
- Maximum junction temperature: 150°C
- Thermal shutdown: 165°C (hysteresis)
- Power dissipation: 500mW maximum
6. Automotive-Specific Features
6.1 Diagnostic Capabilities
- Bus short detection
- Dominant timeout protection
- Permanent dominant detection
- Thermal warning flag
6.2 Automotive Network Integration
- Compatible with AUTOSAR architectures
- Supports CAN FD data phase optimization
- Enables mixed CAN FD/Classic CAN networks
- Suitable for daisy-chain topologies
7. Application-Specific Recommendations
7.1 Automotive Applications
- Body Control Modules: TJA1044 optimal
- ADAS Systems: TJA1057 preferred
- EV Power Systems: TJA1044 or TJA1057
- Infotainment: TJA1049 with partial networking
7.2 Industrial Applications
- PLC Networks: TJA1044 standard choice
- Robotics: TJA1057 for timing-critical
- Agricultural Equipment: TJA1043 cost option
8. Design Support Ecosystem
8.1 NXP Provided Resources
- Reference schematics for:
- 12V automotive systems
- 24V industrial applications
- Battery-powered IoT edge nodes
8.2 Simulation Models
- SPICE models for signal integrity analysis
- IBIS models for board-level simulation
- Thermal models for junction analysis
8.3 Development Tools
- Evaluation boards with:
- Protocol analyzers
- Power measurement
- EMC test interfaces
9. Future-Proofing Considerations
9.1 Technology Roadmap
- NXP commitment to 10+ year availability
- Pin-compatible future upgrades planned
- Migration path to CAN XL anticipated
9.2 Cybersecurity Features
- Support for secured CAN FD frames
- Compatible with in-frame response protocols
- Enables secure boot implementations
10. Conclusion and Selection Guidelines
The TJA1044BTK/0J represents the most balanced choice for general CAN FD applications, offering:
- Optimal combination of performance and power
- Robust protection features
- Flexible integration options
- Comprehensive design support
For specialized requirements:
- Ultra-low latency: Choose TJA1057
- Cost-sensitive designs: Consider TJA1043
- Partial networking: TJA1049 required
Frequently Asked Questions (FAQs)
General Information
- What is the TJA1044BTK/0J?
- A high-speed CAN FD transceiver from NXP, supporting up to 5 Mbps in CAN FD mode and backward-compatible with Classic CAN 2.0B.
- What does “CAN FD” mean?
- CAN FD (Flexible Data Rate) allows faster data transmission (up to 5 Mbps) compared to Classic CAN (1 Mbps).
- Is the TJA1044BTK/0J automotive-grade?
- Yes, it is AEC-Q100 Grade 1 qualified (-40°C to +150°C).
- What package does it come in?
- HVSON-8 (3.0 × 3.0 mm, 0.65 mm pitch).
- Is it RoHS compliant?
- Yes, it is halogen-free and REACH SVHC compliant.
- What is the difference between TJA1044 and TJA1043?
- TJA1044 has better fault protection (±58V vs. ±40V) and lower sleep current (5µA vs. 10µA).
- Does it support Partial Networking?
- No, for Partial Networking, consider the TJA1049.
- What is the typical operating voltage?
- 4.5V to 5.5V (V<sub>CC</sub>) and 3.0V to 5.5V (V<sub>IO</sub>) for logic compatibility.
- Is it recommended for new designs?
- Yes, NXP lists it as active and recommended for new projects.
- Where can I find the datasheet?
Technical Specifications
- What is the maximum CAN FD data rate?
- 5 Mbps in the data phase (arbitration phase remains at 2 Mbps).
- What is the propagation delay?
- 210 ns (TJA1057 is faster at 190 ns).
- What is the ESD protection rating?
- ±8 kV (IEC 61000-4-2).
- How much current does it consume in sleep mode?
- 5 µA (ultra-low power for battery-operated systems).
- Does it have a V<sub>IO</sub> pin?
- Yes, supporting 3.0V to 5.5V logic levels.
- What is the bus fault protection range?
- ±58V DC (superior to TJA1043’s ±40V).
- Is it compatible with 3.3V microcontrollers?
- Yes, thanks to the V<sub>IO</sub> pin.
- What is the operating temperature range?
- -40°C to +150°C (AEC-Q100 Grade 1).
- Does it support wake-up via CAN bus?
- Yes, it supports host + bus wake-up.
- What is the typical standby current?
- 15 µA (with wake-up capability).
Applications & Usage
- What are typical automotive applications?
- ECUs, ADAS, EV battery management, and infotainment systems.
- Can it be used in industrial automation?
- Yes, for PLCs, robotics, and factory networks.
- Is it suitable for 12V/24V automotive systems?
- Yes, with ±58V fault protection.
- Does it work in electric vehicles (EVs)?
- Yes, ideal for BMS, OBC, and motor control.
- Can it replace Classic CAN transceivers?
- Yes, it is backward-compatible with CAN 2.0B.
- Is it used in ADAS systems?
- Yes, but TJA1057 (190ns delay) may be better for ultra-low latency.
- Does it support daisy-chaining?
- Yes, it works in multi-node CAN FD networks.
- Is it good for IoT edge devices?
- Yes, due to its 5 µA sleep mode.
- Can it be used in medical devices?
- Yes, where CAN FD is needed for diagnostics.
- Is it used in aerospace applications?
- Yes, in avionics where CAN FD is required.
Design & Integration
- Does NXP provide evaluation boards?
- Yes, such as the TJA1044 Evaluation Kit.
- Are reference designs available?
- Yes, including schematics for automotive and industrial use.
- Does it need external termination resistors?
- Yes, standard 120Ω termination is required.
- Is an MCU with CAN FD controller required?
- Yes, it only handles the physical layer (needs a CAN FD MCU).
- What PCB layout guidelines apply?
- Follow ISO 11898-2 for impedance control and EMC.
- Does it work with AUTOSAR?
- Yes, compatible with AUTOSAR-based ECUs.
- Are SPICE models available?
- Yes, for signal integrity simulations.
- Does it support secure CAN FD?
- It can work with secured frames, but encryption is handled by the MCU.
- Can it be used in mixed CAN FD + Classic CAN networks?
- Yes, it automatically adapts to the bus speed.
- What’s the maximum bus length at 5 Mbps?
- Typically 10-20m (depends on cable quality).
Troubleshooting & Alternatives
- Why is my CAN FD communication unstable?
- Check termination, baud rate settings, and PCB layout.
- What if I need Partial Networking?
- Use TJA1049 instead.
- What if I need faster propagation delay?
- TJA1057 (190ns) is better for ADAS/EVs.
- Is there a drop-in replacement for TJA1042?
- Yes, TJA1044 is a direct upgrade.
- Where can I buy samples?
- Distributors like TG Microchip stock it.
Datasheet
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