TJA1442AT/0Z

Drivers, Receivers, Transceivers Overview

The TJA1442AT/0Z is a high-speed CAN transceiver with Standby mode, designed for automotive and industrial applications. It provides an interface between a CAN or CAN FD protocol controller and the physical two-wire bus. The device supports data rates up to 5 Mbit/s in both Classical CAN and CAN FD fast phases. It operates within a supply voltage range of 4.5 V to 5.5 V on pin VCC and features a dedicated VIO pin (2.95 V to 5.5 V) for direct interfacing with 3.3 V or 5 V microcontrollers. The component is qualified according to AEC-Q100 Grade 1 and offers ESD protection of ±8 kV (IEC). It is housed in an SO8 package.

Drivers, Receivers, Transceivers Feature Summary

• Supports Normal and Standby modes with low-power wake-up capability via host or bus signals.
• Features undervoltage detection and defined fail-safe behavior when supply voltages drop below thresholds.
• Includes TXD dominant time-out function to prevent permanent bus blocking due to hardware failures.
• Provides high electromagnetic immunity and low emission characteristics compliant with ISO 11898-2:2016.

Drivers, Receivers, Transceivers Applications

• Automotive networks requiring high-speed communication and low power consumption.
• Industrial control systems utilizing CAN or CAN FD protocols.
• Direct replacement for legacy high-speed CAN transceivers like TJA1042 without hardware changes.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'AT' confirms the inclusion of the VIO pin for I/O level adaptation. Confirm the package type matches the design requirements, as the TJA1442 family also includes HVSON8 variants. Ensure compliance with RoHS standards is documented for the specific batch. Check for any recent product change notifications that might affect long-term availability.

Drivers, Receivers, Transceivers Selection Notes

Select the TJA1442AT variant specifically when interfacing with microcontrollers operating at 3.3 V or 5 V logic levels, as it includes the VIO pin. If only 5 V logic is used and VIO is unnecessary, the TJA1442BT variant may be considered. Ensure the application requires the Standby mode functionality for power management. Verify that the thermal resistance of the SO8 package meets the system's heat dissipation needs.

Drivers, Receivers, Transceivers Part Context

The TJA1442 belongs to the TJA144x family of transceivers from NXP Semiconductors. This family implements the CAN physical layer defined in ISO 11898-2:2016 and SAE J2284 standards. The TJA1442 series is designed to be pin-compatible with previous generations, facilitating easy upgrades in existing designs while offering improved EMC performance and lower standby currents.

Drivers, Receivers, Transceivers Replacement Considerations

The TJA1442 is explicitly designed as a simple replacement for the TJA1042 and TJA1044GT. It offers pin compatibility, allowing for retrofitting into existing applications without changes to hardware or software design. Ensure the original design utilized a single-supply configuration compatible with the TJA1442's VCC/VIO architecture.