TJA1051T/3/2Z

Drivers, Receivers, Transceivers Overview

The TJA1051T/3/2Z is a high-speed CAN transceiver designed for automotive applications, providing an interface between a microcontroller and the physical two-wire CAN bus. It supports data rates up to 5 Mbit/s in the CAN FD fast phase and complies with ISO 11898-2:2016 and SAE J2284 standards. The device operates on a VCC supply voltage of 4.5 V to 5.5 V and features a dedicated VIO pin (pin 5) allowing direct interfacing with microcontrollers powered by voltages ranging from 2.8 V to 5.5 V. It is available in an SOIC-8 package.

Drivers, Receivers, Transceivers Feature Summary

• Directly interfaces with microcontrollers having supply voltages from 3 V to 5 V via the VIO input pin.
• Provides ideal passive behavior to the CAN bus when the supply voltage is off.
• Features improved electromagnetic compatibility (EMC) and electrostatic discharge (ESD) handling capability.
• Includes TXD dominant time-out function to prevent permanent dominant bus states.

Drivers, Receivers, Transceivers Applications

• High-speed CAN networks in automotive nodes without standby mode wake-up requirements.
• Nodes requiring direct connection to 3 V or 5 V microcontrollers.
• Systems suitable for 12 V and 24 V power architectures.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix /2Z against official NXP documentation to confirm packaging details such as tape and reel specifications. Ensure the component matches the required SOIC-8 package variant and that the VIO pin configuration aligns with the target microcontroller's I/O levels. Cross-reference the part number with current datasheet revisions to confirm active status and compliance with RoHS standards.

Drivers, Receivers, Transceivers Selection Notes

Select this variant when the design requires a dedicated VIO pin to support microcontrollers operating at supply voltages lower than the standard 5 V VCC level. This version differs from the TJA1051T/E which uses an Enable pin, and the standard TJA1051T which lacks the VIO pin. Ensure the application does not require the low-current Off mode provided by the EN pin variant.

Drivers, Receivers, Transceivers Part Context

The TJA1051 belongs to the third generation of high-speed CAN transceivers from NXP Semiconductors. It serves as an upgrade to previous generations like the TJA1050, offering enhanced EMC performance and robust ESD protection. The TJA1051 family includes variants distinguished by their pin 5 functionality, catering to different microcontroller interface needs.

Drivers, Receivers, Transceivers Replacement Considerations

NXP recommends the TJA1057GT/3J as the successor to the TJA1051T/3 series. Verify if the newer model meets all system requirements regarding package size, pinout compatibility, and electrical characteristics before substitution.

Drivers, Receivers, Transceivers FAQ

What is the function of pin 5 on the TJA1051T/3?

Pin 5 is the VIO supply voltage input, which allows the transceiver to be directly interfaced with microcontrollers having supply voltages from 3 V to 5 V.

Does the TJA1051T/3 support CAN FD?

Yes, timing is guaranteed for data rates up to 5 Mbit/s in the CAN FD fast phase.

How does the TJA1051T/3 behave when unpowered?

The transceiver disengages from the bus when not powered up, exhibiting ideal passive behavior with zero load on the bus lines.