UJA1076TW/5V0,112

Specialized Overview

The UJA1076TW/5V0,112 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, a scalable 5 V voltage regulator delivering up to 250 mA for microcontrollers, and a separate 5 V regulator for the on-board CAN transceiver. The device features an advanced independent watchdog, full-duplex Serial Peripheral Interface (SPI), two local wake-up input ports, and a limp-home output port. Designed for automotive Electronic Control Units (ECUs), it supports remote flash programming via the CAN bus and operates within a battery supply range of 4.5 V to 28 V. The component is housed in a 32-lead HTSSOP package.

Specialized Feature Summary

• Integrates a high-speed CAN transceiver with dedicated low dropout voltage regulators for both the microcontroller and the CAN bus to enhance EMC performance.
• Provides advanced system reliability through safe start-up behavior, detailed status reporting, and programmable watchdog modes including Window and Timeout.
• Supports flexible power management with Standby and Sleep modes featuring very low current consumption while maintaining full wake-up capability.
• Includes robust protection features such as ±8 kV ESD protection on bus pins, short-circuit proof CAN bus pins, and overtemperature shutdown.

Specialized Applications

• Automotive Electronic Control Units (ECUs)
• Power and sensor peripheral control networks
• Gateway applications requiring high-speed CAN communication

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm regulator voltage and feature set. Confirm that the HTSSOP32 package dimensions match the design requirements. Check for any end-of-life or obsolescence notices prior to finalizing procurement plans.

Specialized Selection Notes

Select this component when a single-chip solution for CAN-based ECUs is required. Ensure the 5 V regulator output matches the microcontroller supply needs. Consider external PNP transistor usage if higher current distribution or thermal management is necessary. Verify SPI interface compatibility with the target microcontroller.

Specialized Part Context

The UJA1076 series serves as a core System Basis Chip designed to replace discrete components in automotive ECUs. It consolidates CAN transceiver, power regulation, and diagnostic functions into a single package. This integration reduces board space and complexity while improving system reliability and electromagnetic compatibility for vehicle networking applications.

Specialized Replacement Considerations

The datasheet notes downward compatibility with the TJA1042 CAN transceiver. However, direct pin-for-pin replacements should be verified against official substitution lists. No other specific replacement part numbers are confirmed in the provided source material.