TJA1042T/3,118

The TJA1042 high-speed CAN transceiver 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 the differential transmit and receive capability to (a microcontroller with) a CAN
protocol controller.
The TJA1042 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 TJA1040. 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
• A very low-current Standby mode with bus wake-up capability
• Variants with a VIO pin can be interfaced directly with microcontrollers with supply
voltages from 3.3 V to 5 V
The TJA1042 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. The TJA1042B and TJA1042C
feature shorter propagation delay, supporting larger network topologies.
These features make the TJA1042 an excellent choice for all types of HS-CAN networks,
in nodes that require a low-power mode with wake-up capability via the CAN bus.

Category: Transceivers

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SPECIFICATION

General
• Fully ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5 and SAE J1939-14 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),
according to proposed EMC Standards IEC 62228-3 and SAE J2962-2
• Variants with a VIO pin allow for direct interfacing with 3.3 V to 5 V microcontrollers
• Shorter propagation delay on the TJA1042B and TJA1042C variants supports larger
network topologies (see Table 8)
• SPLIT voltage output on TJA1042T and TJA1042CT for stabilizing the recessive bus
level
• Both VIO and non-VIO variants are available in SO8 and leadless HVSON8 (3.0 mm
× 3.0 mm) packages; HVSON8 with improved Automated Optical Inspection (AOI)
capability.

• Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)
compliant)
• AEC-Q100 qualified

Predictable and fail-safe behavior
• Very low-current Standby mode with host and bus wake-up capability
• Functional behavior predictable under all supply conditions
• Transceiver disengages from the bus (high-ohmic) when the supply voltage drops
below the switch-off undervoltage threshold
• Transmit Data (TXD) dominant time-out function
• Bus-dominant time-out function in Standby mode
• Undervoltage detection on pins VCC and VIO

Protections
• High ESD handling capability on the bus pins (±8 kV)
• High voltage robustness on CAN pins (±58 V)
• Bus pins protected against transients in automotive environments
• Thermally protected