Overview
The TJA1051T/1U is a high-speed CAN (Controller Area Network) transceiver produced by NXP USA Inc. It serves as an interface between a CAN protocol controller and the physical two-wire CAN bus, making it a crucial component in high-speed CAN applications, particularly in the automotive industry. This transceiver belongs to the third generation of high-speed CAN transceivers from NXP Semiconductors, offering significant improvements over earlier models like the TJA1050. It is designed to provide reliable communication in CAN FD fast phase at data rates up to 5 Mbit/s, adhering to ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
Key Specifications
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| VCC | Supply voltage | 4.5 | 5.5 | V | ||
| VIO | Supply voltage on pin VIO | 2.8 | 5.5 | V | ||
| Vuvd(VCC) | Undervoltage detection voltage on pin VCC | 3.5 | 4.5 | V | ||
| ICC (Off mode) | Supply current | TJA1051T/E | 1 | 5 | 8 | μA |
| ICC (Silent mode) | Supply current | 0.1 | 1 | 2.5 | mA | |
| ICC (Normal mode, bus recessive) | Supply current | 2.5 | 5 | 10 | mA | |
| ICC (Normal mode, bus dominant) | Supply current | 20 | 50 | 70 | mA | |
| VESD | Electrostatic discharge voltage | IEC 61000-4-2 at pins CANH and CANL | -8 | +8 | kV | |
| VCANH | Voltage on pin CANH | -58 | +58 | V | ||
| VCANL | Voltage on pin CANL | -58 | +58 | V | ||
| Tvj | Virtual junction temperature | -40 | +150 | °C |
Key Features
- ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant
- Timing guaranteed for data rates up to 5 Mbit/s in the CAN FD fast phase
- Suitable for 12 V and 24 V systems
- Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
- Ideal passive behavior to the CAN bus when the supply voltage is off
- Direct interfacing to microcontrollers with supply voltages from 3 V to 5 V (TJA1051T/3 and TJA1051TK/3)
- High ElectroStatic Discharge (ESD) handling capability on the bus pins
- Bus pins protected against transients in automotive environments
- Transmit Data (TXD) dominant time-out function
- Undervoltage detection on pins VCC and VIO
- Thermally protected
- AEC-Q100 qualified and RoHS compliant
- Available in SO8 package or leadless HVSON8 package (3.0 mm × 3.0 mm)
Applications
The TJA1051T/1U is primarily used in high-speed CAN applications within the automotive industry. It is suitable for various automotive systems that require reliable and high-speed communication, such as engine control units, transmission control units, and other networked automotive components. Its compliance with automotive standards and robust protection features make it an excellent choice for nodes that do not require a standby mode with wake-up capability via the bus.
Q & A
- What is the TJA1051T/1U used for?
The TJA1051T/1U is a high-speed CAN transceiver used to interface between a CAN protocol controller and the physical two-wire CAN bus in automotive applications.
- What are the key standards that the TJA1051T/1U complies with?
The TJA1051T/1U complies with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
- What is the maximum data rate supported by the TJA1051T/1U?
The TJA1051T/1U supports data rates up to 5 Mbit/s in the CAN FD fast phase.
- What are the supply voltage ranges for the TJA1051T/1U?
The supply voltage ranges are 4.5 V to 5.5 V for VCC and 2.8 V to 5.5 V for VIO.
- Does the TJA1051T/1U support low-power modes?
Yes, the TJA1051T/1U supports Normal, Silent, and an additional Off mode (in the TJA1051T/E version).
- What kind of protection does the TJA1051T/1U offer?
The TJA1051T/1U offers high ESD handling capability, protection against transients, undervoltage detection, and thermal protection.
- Is the TJA1051T/1U suitable for 12 V and 24 V systems?
Yes, it is suitable for both 12 V and 24 V systems.
- What are the package options available for the TJA1051T/1U?
The TJA1051T/1U is available in SO8 package or leadless HVSON8 package (3.0 mm × 3.0 mm).
- Is the TJA1051T/1U AEC-Q100 qualified?
Yes, the TJA1051T/1U is AEC-Q100 qualified and RoHS compliant.
- Can the TJA1051T/1U be used with microcontrollers having different supply voltages?
Yes, the TJA1051T/3 and TJA1051TK/3 versions can be interfaced directly to microcontrollers with supply voltages from 3 V to 5 V.
