UJA1076TW/5V0/WD,1

Specialized Overview

The UJA1076TW/5V0/WD,1 is a high-speed CAN core System Basis Chip (SBC) from NXP Semiconductors. It integrates a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5 standards, an advanced independent watchdog, and two voltage regulators. The main regulator V1 provides a scalable 5 V output delivering up to 250 mA for microcontroller supply, while the separate regulator V2 supplies the on-board CAN transceiver. The device features a full-duplex Serial Peripheral Interface (SPI), two local wake-up input ports, and a limp-home output port. It operates within a battery voltage range of 4.5 V to 28 V and supports safe system start-up behavior.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver compatible with TJA1042 and ISO 11898-2/5 standards
• Includes an advanced independent watchdog with Window and Timeout modes
• Features a scalable 250 mA voltage regulator extendable via external PNP transistor
• Provides detailed status reporting and controlled system start-up behavior

Specialized Applications

• Electronic Control Units (ECU) in automotive applications
• Networking applications controlling power and sensor peripherals
• Microcontroller systems requiring integrated CAN communication and power management

Specialized Procurement Notes

Verify component authenticity by checking the manufacturer's marking against official datasheet specifications. Confirm the ordering suffix matches the required voltage regulator version and watchdog configuration. Ensure the package type corresponds to the specified HTSSOP32 variant. Cross-reference the part number with authorized distributors to confirm availability and compliance with relevant environmental standards.

Specialized Selection Notes

Select this component when a single-chip solution for CAN communication and power management is required. The 5 V regulator version is suitable for microcontrollers operating at 5 V logic levels. The inclusion of the watchdog ensures system reliability through periodic software monitoring. Consider the external PNP transistor option if higher current capability or improved thermal dissipation distribution across the PCB is necessary for the specific application design.

Specialized Part Context

The UJA1076 series serves as a core System Basis Chip designed to replace discrete components in Electronic Control Units. It consolidates essential functions such as CAN transceiving, voltage regulation, and watchdog timing into a single package. This integration reduces board space and simplifies the design of automotive networking applications that require robust communication and reliable power management for connected microcontrollers.

Specialized Replacement Considerations

The UJA1076ATW/5V0WD,1 is documented as a related variant within the same product family. Verify pin compatibility and functional equivalence before substitution. Ensure the replacement part maintains the required 5 V regulator output and watchdog features.