LAN7850 Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The Microchip LAN7850 is a USB 2.0 Hi-Speed to 10/100/1000 Mbps Gigabit Ethernet controller with an integrated HSIC interface for embedded connectivity. It supports USB 2.0 at up to 480 Mbps and provides a full Gigabit Ethernet MAC and PHY in a single QFN IC. Ideal for single-board computers, embedded Linux platforms, and USB docking stations.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 57
- Lifecycle
- ACTIVE
- Datasheet
- LAN7850 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- USB 2.0 Hi-Speed to Gigabit Ethernet conversion supporting 10/100/1000 Mbps speeds in a single IC
- Integrated HSIC (High-Speed Inter-Chip) interface for direct chip-to-chip USB connectivity without an external hub
- Full Gigabit MAC and PHY integration reducing external component count and BOM complexity
- Supports USB 2.0 at up to 480 Mbps enabling high-throughput network bridging for embedded systems
- Compact QFN package suitable for space-constrained SBC and embedded module designs
Applications
The LAN7850 is widely used in single-board computers, Raspberry Pi-class platforms, and embedded Linux modules requiring Gigabit Ethernet connectivity through a USB 2.0 interface at 480 Mbps. Its HSIC interface enables direct integration on carrier boards alongside application processors without a discrete USB hub, reducing latency and board area. It also appears in USB docking stations, industrial gateways, and portable routers where a compact Gigabit bridge between USB and RJ45 Ethernet is needed.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LAN7850:
suggested
suggested
suggested
Frequently Asked Questions
What Ethernet speeds and USB version does the Microchip LAN7850 controller support?
The LAN7850 supports 10 Mbps, 100 Mbps, and 1000 Mbps Ethernet (Gigabit) over a USB 2.0 Hi-Speed interface operating at up to 480 Mbps. The integrated MAC and PHY eliminate the need for a separate Ethernet PHY chip, simplifying board design for embedded platforms and single-board computers.
How does the HSIC interface on the LAN7850 differ from standard USB Type-A connectivity in embedded designs?
HSIC (High-Speed Inter-Chip) is a USB 2.0 variant operating at 480 Mbps through a 2-wire differential interface designed for chip-to-chip connections on PCBs, eliminating the need for a USB connector or cable. This reduces EMI, board thickness, and connector cost compared to standard USB Type-A or Micro-USB implementations, making LAN7850 well-suited for embedded module carrier board designs.
Which single-board computer or embedded Linux platforms commonly use the LAN7850 for Gigabit Ethernet?
The LAN7850 is used on platforms including the Raspberry Pi 3 Model B+ and similar SBCs requiring Gigabit Ethernet without a native RGMII MAC. Its USB 2.0 at 480 Mbps bandwidth limits practical throughput to approximately 300 Mbps in real-world conditions, which suffices for most embedded IoT gateway, media streaming, and light server applications.
What advantages does the LAN7850's integrated MAC and PHY offer for a USB-to-Ethernet dock or gateway design?
Integrating both the Gigabit Ethernet MAC and PHY in one QFN IC reduces external component count, PCB layers, and routing complexity compared to split MAC-plus-PHY architectures. For USB docking stations and travel routers supporting 10/100/1000 Mbps, this integration lowers BOM cost and shrinks board footprint, enabling products thinner than 6 mm in the Ethernet controller subsection.
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