Overview
The TJA1051T/E/1J is a high-speed CAN transceiver produced by NXP USA Inc., designed to provide an interface between a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. This transceiver is part of the third generation of high-speed CAN transceivers from NXP Semiconductors, offering significant improvements over earlier models like the TJA1050. It is specifically tailored for high-speed CAN applications in the automotive industry, ensuring reliable communication at data rates up to 5 Mbit/s in the CAN FD fast phase, as defined by ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC supply voltage | 4.5 | 5.5 | V | ||
| VIO supply voltage | 2.8 | 5.5 | V | ||
| Vuvd(VCC) undervoltage detection voltage | 3.5 | 4.5 | V | ||
| ICC supply current (Normal mode, bus recessive) | 2.5 | 5 | 10 | mA | |
| ICC supply current (Normal mode, bus dominant) | 20 | 50 | 70 | mA | |
| IESD 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
- TJA1051T/3 and TJA1051TK/3 can be interfaced directly to microcontrollers with supply voltages from 3 V to 5 V
- EN input on TJA1051T/E allows the microcontroller to switch the transceiver to a very low-current Off mode
- Available in SO8 package or leadless HVSON8 package (3.0 mm × 3.0 mm) with improved Automated Optical Inspection (AOI) capability
- Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)
- AEC-Q100 qualified
- 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
Applications
The TJA1051T/E/1J is primarily designed for high-speed CAN applications in 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 vehicle network nodes that do not require a standby mode with wake-up capability via the bus.
Q & A
- What is the TJA1051T/E/1J used for?
The TJA1051T/E/1J is a high-speed CAN transceiver that provides an interface between a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus.
- What are the key improvements of the TJA1051 over the TJA1050?
The TJA1051 offers improved ElectroMagnetic Compatibility (EMC) and ElectroStatic Discharge (ESD) performance, along with enhanced slope control and high DC handling capability on the bus pins.
- What are the operating modes of the TJA1051?
The TJA1051 supports two operating modes: Normal and Silent, selected via pin S. An additional Off mode is supported in the TJA1051T/E via pin EN.
- What is the significance of the EN pin in the TJA1051T/E?
The EN pin on the TJA1051T/E allows the microcontroller to switch the transceiver to a very low-current Off mode.
- What are the package options for the TJA1051?
The TJA1051 is available in SO8 and leadless HVSON8 packages (3.0 mm × 3.0 mm).
- Is the TJA1051 compliant with automotive standards?
Yes, the TJA1051 is compliant with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 standards.
- What is the maximum data rate supported by the TJA1051?
The TJA1051 supports data rates up to 5 Mbit/s in the CAN FD fast phase.
- What is the voltage range for the VCC supply?
The VCC supply voltage range is from 4.5 V to 5.5 V.
- What is the significance of the VIO pin in the TJA1051T/3 and TJA1051TK/3?
The VIO pin allows for direct interfacing to microcontrollers with supply voltages from 3 V to 5 V.
- Is the TJA1051 environmentally friendly?
Yes, the TJA1051 is a dark green product, which means it is halogen free and compliant with the Restriction of Hazardous Substances (RoHS).
- What is the qualification standard for the TJA1051?
The TJA1051 is AEC-Q100 qualified.
