The TJA1051 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. The transceiver is designed for high-speed CAN applications in the automotive industry, providing differential transmit and receive capability to (a microcontroller with) a CAN protocol controller.
The TJA1051 belongs to the third generation of high-speed CAN transceivers from NXP Semiconductors, offering significant improvements over first- and second-generation devices such as the TJA1050. It offers improved ElectroMagnetic Compatibility (EMC) and ElectroStatic Discharge (ESD) performance, and also features:
* 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
The TJA1051 implements the CAN physical layer as defined in the current ISO11898 standard (ISO11898-2:2003, ISO11898-5:2007) and the pending updated version of ISO 11898-2:2016. Pending the release of the updated version of ISO11898-2:2016 including CAN FD and SAE J2284-4/5, additional timing parameters defining loop delay symmetry are specified. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s.
These features make the TJA1051 an excellent choice for all types of HS-CAN networks, in nodes that do not require a standby mode with wake-up capability via the bus.
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## Features
**General**
* Fully ISO 11898-2:2003 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)
* VIO input on TJA1051T/3 and TJA1051TK/3 allows for direct interfacing with 3 V to 5 V microcontrollers (available in SO8 and very small HVSON8 packages respectively)
* 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
**Low-power management**
* Functional behavior predictable under all supply conditions
* Transceiver disengages from the bus when not powered up (zero load)
**Protection**
* High ElectroStatic Discharge (ESD) handling capability on the bus pins
* Bus pins protected against transients in automotive environments
