Overview
The TJA1145TK/FDJ is a high-speed CAN (Controller Area Network) transceiver produced by NXP USA Inc. This component is designed to provide an interface between a CAN protocol controller and the physical two-wire CAN bus, making it ideal for high-speed CAN applications, particularly in the automotive industry. The transceiver supports ISO 11898-2:2016 compliant CAN Partial Networking and features advanced power management, including low power consumption in Standby and Sleep modes. It also includes a selective wake-up function, allowing it to ignore CAN FD frames while waiting for a valid wake-up frame, which is beneficial for networks that support both CAN FD and standard CAN 2.0 communications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VBAT (Battery Supply Voltage) | - | 4.5 | - | 28 | V |
| VCC (Supply Voltage) | - | 4.5 | - | 5.5 | V |
| VIO (Supply Voltage on Pin VIO) | - | 2.85 | - | 5.5 | V |
| Vth(det)poff (Power-off Detection Threshold Voltage) | VBAT falling | 2.8 | - | 3 | V |
| Vuvd(VCC) (Undervoltage Detection Voltage on Pin VCC) | - | 4.5 | - | 4.75 | V |
| Vuvd(VIO) (Undervoltage Detection Voltage on Pin VIO) | VBAT > 4.5 V | 2.7 | - | 2.85 | V |
| IBAT (Battery Supply Current) | Normal mode | - | 1 | 1.5 | mA |
| IBAT (Battery Supply Current) | Sleep mode; CAN Offline mode; -40°C < Tvj < 85°C | - | - | - | mA |
| Operating Temperature | - | -40 | - | 150 | °C |
| Package / Case | - | 14-VDFN Exposed Pad | - | - | - |
Key Features
- ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-4 compliant.
- Timing guaranteed for data rates up to 2 Mbit/s.
- Autonomous bus biasing according to ISO 11898-2:2016.
- Optimized for in-vehicle high-speed CAN communication.
- No ‘false’ wake-ups due to CAN FD in TJA1145/FD variants.
- Very low power consumption in Standby and Sleep modes.
- Selective wake-up function supporting CAN Partial Networking.
- Local and/or remote wake-up functionality.
- Transceiver disengages from the bus when the battery supply is removed.
- VIO input allows for direct interfacing with 3.3 V to 5 V microcontrollers.
- 16-, 24- or 32-bit SPI for configuration, control, and diagnosis.
- Transmit Data (TXD) dominant time-out function with diagnosis).
- Overtemperature warning and shut-down).
- Undervoltage detection and recovery on pins VCC, VIO, and BAT).
- Cold start diagnosis (via bits PO and NMS)).
- Advanced system and transceiver interrupt handling).
- ESD protection: ±8 kV according to the Human Body Model (HBM) on the CAN bus pins, ±6 kV according to IEC 61000-4-2 on pins BAT and WAKE and on the CAN bus pins).
- CAN bus pins short-circuit proof to ±58 V).
- Battery and CAN bus pins protected against transients according to ISO 7637-3, test pulses 1, 2a, 3a, and 3b).
Applications
The TJA1145TK/FDJ is primarily designed for high-speed CAN applications in the automotive industry. It is suitable for various automotive systems that require reliable and efficient communication over the CAN bus. Some specific applications include:
- In-vehicle networks requiring high-speed data transmission.
- Automotive control units such as engine control modules, transmission control modules, and body control modules.
- Advanced driver-assistance systems (ADAS) and autonomous driving systems.
- Infotainment and telematics systems.
- Any automotive application requiring ISO 11898-2:2016 compliant CAN communication.
Q & A
- What is the primary function of the TJA1145TK/FDJ?
The TJA1145TK/FDJ is a high-speed CAN transceiver that provides an interface between a CAN protocol controller and the physical two-wire CAN bus.
- What are the operating temperature ranges for the TJA1145TK/FDJ?
The operating temperature range is from -40°C to 150°C.
- What are the supply voltage ranges for the TJA1145TK/FDJ?
The supply voltage ranges are 4.5 V to 5.5 V for VCC, 2.85 V to 5.5 V for VIO, and 4.5 V to 28 V for VBAT.
- Does the TJA1145TK/FDJ support CAN FD?
- What kind of ESD protection does the TJA1145TK/FDJ offer?
- How does the TJA1145TK/FDJ manage power consumption?
- What is the maximum data rate supported by the TJA1145TK/FDJ?
- What kind of interface does the TJA1145TK/FDJ provide for configuration and diagnosis?
- Is the TJA1145TK/FDJ compatible with different microcontroller voltage levels?
- What kind of protection does the TJA1145TK/FDJ offer against transients?
