LAN7800T-I/Y9X

Controllers Overview

The LAN7800T-I/Y9X is a SuperSpeed USB 3.1 Gen 1 to 10/100/1000 Ethernet controller manufactured by Microchip Technology. It integrates a Gigabit PHY with HP Auto-MDIX, an Ethernet MAC, and a USB 3.1 Gen 1 device controller. The component operates within an industrial temperature range of -40°C to +85°C. It supports Energy Efficient Ethernet (IEEE 802.3az) and Wake on LAN features. Configuration data can be loaded via One Time Programmable memory or an external EEPROM. The device utilizes a 48-pin SQFN package measuring 7x7 mm.

Controllers Feature Summary

• Integrates SuperSpeed USB 3.1 Gen 1 device controller with 10/100/1000 Ethernet MAC and PHY
• Supports NetDetach for automatic USB attach/detach based on Ethernet cable connection status
• Includes internal FIFO controller with packet buffering and receive filtering engine
• Provides multiple power management features including AOAC support and PME pin capability

Controllers Applications

• Automotive Infotainment systems
• Notebook and Tablet Docking Stations
• USB Port Replicators
• Standalone USB to Ethernet Dongles
• Test Instrumentation and Industrial Embedded Systems

Controllers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the industrial temperature rating (-40°C to +85°C) and the 48-pin SQFN (7x7 mm) package configuration. Ensure compatibility with required operating voltage levels and interface standards before integration into the design.

Controllers Selection Notes

Select this component when a high-performance bridge between USB 3.1 Gen 1 hosts and Gigabit Ethernet networks is required. Consider the integrated PHY and MAC capabilities to reduce external component count. Verify that the application environment falls within the specified industrial temperature range and that software drivers are available for the target operating system.

Controllers Part Context

This part belongs to the LAN7800 series of USB to Ethernet controllers from Microchip Technology. The 'I' designation indicates the industrial temperature grade, while 'Y9X' specifies the specific package type and tape-and-reel packaging format. This series is designed for cost-effective connectivity solutions in embedded and consumer electronics.

Controllers Replacement Considerations

Consult official Microchip documentation for confirmed substitute part numbers. Verify functional equivalence regarding USB speed, Ethernet standards, and package dimensions before substitution.