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