TJA1100HNZ

Drivers, Receivers, Transceivers Overview

The TJA1100HNZ is a 100BASE-T1 compliant Ethernet PHY transceiver optimized for automotive applications. It provides 100 Mbit/s transmit and receive capability over a single unshielded twisted pair (UTP) cable, supporting cable lengths of up to at least 15 meters with a bit error rate less than or equal to 1E-10. The device operates on a single 3.3V supply with integrated 1.8V LDO regulators. It supports both MII and RMII interfaces and features an HVQFN36 package (6x6 mm). The component is qualified according to AEC-Q100 standards and operates within an automotive-grade temperature range from -40°C to +125°C.

Drivers, Receivers, Transceivers Feature Summary

• Optimized for automotive use cases with enhanced PAM-3 pulse shaping for low RF emissions
• Supports local and robust remote wake-up capabilities via bus lines
• Includes dedicated enable/disable input pin to minimize power consumption
• Features diagnosis of cabling errors such as shorts and opens

Drivers, Receivers, Transceivers Applications

• IP camera links in vehicles
• Driver assistance systems
• Automotive backbone networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package and material specifications. Confirm that the component status aligns with design requirements, noting that some variants may carry specific lifecycle statuses. Cross-reference the part number with official distributors to validate authenticity and sourcing channels before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing automotive Ethernet links requiring 100BASE-T1 compliance and single-pair copper connectivity. Ensure the host controller supports either MII or RMII interfaces for integration. Consider the thermal performance of the HVQFN36 package and verify that the system can accommodate the required external crystal or oscillator for clock generation. Evaluate power management strategies given the available sleep and disable modes.

Drivers, Receivers, Transceivers Part Context

The TJA1100HNZ belongs to NXP's family of 100BASE-T1 Automotive Ethernet PHYs. It is designed to provide cost-optimized solutions for in-vehicle networking while meeting stringent automotive EMC and reliability standards. The device complements other network components by enabling high-speed data transmission over simplified cabling infrastructure, supporting the evolution towards software-defined vehicle architectures.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided source material. Designers should consult the manufacturer's official documentation for drop-in compatible alternatives or next-generation replacements within the same product family.