General description

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 ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5. 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.

Features and benefits

2.1 General

 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)

 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

2.2 Low-power management

 Functional behavior predictable under all supply conditions

 Transceiver disengages from the bus when not powered up (zero load)

2.3 Protection

 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