LAN7850-I/8JX Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The LAN7850-I/8JX is a USB-to-Ethernet interface bridge IC supporting USB 3.1 Gen 1 SuperSpeed and Gigabit Ethernet per IEEE 802.3/802.3u, with a maximum data transfer rate of 125 MBps. It integrates an Ethernet MAC/PHY with boundary scan support and a 56-pin VQFN package for compact embedded system designs. Available from Microchip with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Datasheet
- LAN7850-I/8JX Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.3800(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- USB 3.1 Gen 1 SuperSpeed to Gigabit Ethernet bridging at up to 125 MBps data transfer rate
- Integrated Ethernet MAC and PHY supporting IEEE 802.3 and IEEE 802.3u (100BASE-TX/10BASE-T) standards
- Boundary scan (JTAG) support for manufacturing test and in-system debugging
- 25 MHz clock interface with asynchronous and synchronous communication protocol support
- Compact 56-pin VQFN package (SQFN) minimizes PCB footprint for space-constrained embedded designs
Applications
The LAN7850-I/8JX is ideal for embedded single-board computers, industrial gateways, and network-attached storage (NAS) devices that require a USB to Gigabit Ethernet bridge for high-speed wired connectivity. It is widely used in Raspberry Pi-compatible systems and ARM-based SBCs to add a true Gigabit Ethernet port via USB 3.x host controllers at 125 MBps throughput. Medical instruments and test equipment also leverage this device where USB-only platforms need IEEE 802.3 LAN access for remote monitoring and data upload.
Specifications
| Manufacturer Package Code | VQFN-56 |
| Factory Lead Time | 15Weeks |
| Date Of Intro | 2016-10-20 |
| YTEOL | 19 |
| Boundary Scan | YES |
| Bus Compatibility | USB |
| Clock Frequency-Max | 25MHz |
| Communication Protocol | ASYNC, BIT; SYNC, BYTE; ETHERNET |
| Data Transfer Rate-Max | 125MBps |
| Drive Interface Standard | IEEE 802.3; IEEE 802.3U |
| JESD-30 Code | S-PQCC-N56 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of I/O Lines | 12 |
| Number of Serial I/Os | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC56,.31SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | TS 16949 |
| Supply Current-Max | 183mA |
| Supply Voltage-Max | 1.26V |
| Supply Voltage-Min | 1.1V |
| Supply Voltage-Nom | 1.2V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | SERIAL IO/COMMUNICATION CONTROLLER, LAN |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum data transfer rate of the LAN7850-I/8JX USB-to-Ethernet bridge?
The LAN7850-I/8JX supports USB 3.1 Gen 1 SuperSpeed and achieves a maximum data transfer rate of 125 MBps, enabling full Gigabit Ethernet throughput over a USB 3.x host connection. This bandwidth is sufficient for demanding applications such as NAS file transfers and industrial data acquisition at 1000 Mbps line rates.
Which Ethernet standards does the LAN7850-I/8JX comply with, and does it support auto-negotiation?
The LAN7850-I/8JX complies with IEEE 802.3 (10BASE-T) and IEEE 802.3u (100BASE-TX/1000BASE-T), supporting auto-negotiation across 10, 100, and 1000 Mbps link speeds. Its integrated MAC/PHY handles link detection automatically, simplifying host software and reducing integration effort in embedded Linux or Windows systems with 8 or more concurrent network streams.
How does the boundary scan feature of the LAN7850-I/8JX help during PCB production testing?
The LAN7850-I/8JX includes IEEE 1149.1 JTAG boundary scan, enabling automated in-circuit testing of all 56 I/O pins without physical probe access. Manufacturing engineers can verify solder joint integrity and detect open or shorted connections on the VQFN-56 package during production, reducing test fixture complexity and improving first-pass yield on high-volume boards.
In which embedded computing platforms is the LAN7850-I/8JX commonly deployed as a Gigabit Ethernet solution?
The LAN7850-I/8JX is the Gigabit Ethernet controller used in the Raspberry Pi 3B+ and Raspberry Pi 4, providing a 125 MBps USB 3.0-attached 1000BASE-T interface to the Broadcom SoC. It is equally adopted in other ARM-based SBCs, industrial fanless computers, and network appliances where a PCIe lane is unavailable and USB 3.x is the highest-speed host interface.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $9.6300 | $9.63 |
| 25+ | $8.7500 | $218.75 |
| 50+ | $8.6200 | $431.00 |
| 100+ | $7.2900 | $729.00 |
| 1000+ | $6.7300 | $6730.00 |
| 5000+ | $6.3800 | $31900.00 |
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