LAN9514-JZX - 4-Port USB 2.0 Hub, 10/100 Ethernet | Microchip
MPN: LAN9514-JZX ✓ ActiveLAN9514-JZX Overview
A USB hub controller is a semiconductor that expands one host USB connection into multiple peripheral connections while managing USB traffic and device attachment. The LAN9514 belongs to the interface-controller hierarchy that connects USB and Ethernet interfaces to an embedded host. Its integrated USB 2.0 hub and Ethernet MAC/PHY provide a compact connectivity solution without requiring separate USB hub and network-interface components.
The LAN9514-JZX supports high-speed USB 2.0 operation, four USB hub ports, and 10BASE-T and 100BASE-TX networking through an integrated Ethernet PHY. Full- and half-duplex operation with flow control is supported, while automatic preamble generation and removal and 32-bit CRC processing support reliable Ethernet frame handling. IEEE 802.3 and 802.3u compliance is identified in the provided device information.
The controller is designed to consolidate USB-to-USB and USB-to-Ethernet connectivity in compact embedded equipment. Its 3.3 V operating supply supports integration into conventional embedded, industrial, and consumer electronic systems. The integrated 10/100 PHY removes a separate Ethernet transceiver from the host-side design, reducing component count while preserving standard Ethernet frame support.
Typical uses include USB docking stations, desktop and notebook connectivity, printers, game consoles, and embedded platforms that need both peripheral expansion and wired networking. In a docking station, the hub manages multiple USB peripherals while the Ethernet controller provides a 10/100 network connection. In an embedded controller, it can expose USB storage or communications peripherals alongside a wired Ethernet interface.
Designers should use the manufacturer reference schematic and the complete pinout from the official datasheet when assigning power, ground, USB, Ethernet, clock, and control pins. The 64-pin QFN requires careful exposed-pad thermal management and short high-frequency connections. Magnetic Ethernet components, crystal support, decoupling, and the required layout details must be implemented according to the manufacturer reference design.
This product page combines the verified manufacturer and distributor information with practical integration considerations, package-aware alternatives, and an explicit comparison of known LAN9514-family variants. It is intended to help engineers locate the datasheet, evaluate sourcing conditions, and determine whether a same-package replacement preserves the required USB hub and Ethernet functions.
Drop-in alternatives for LAN9514-JZX — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
LAN9514i-JZX
✅ Drop-In📋 Reference alternative (not in catalog)
LAN9512-JZX
✅ Drop-InContact for price
View Datasheet →LAN9514-JZX Specifications
| Product Type | Integrated USB 2.0 hub and 10/100 Ethernet controller |
| USB Interface | Hi-Speed USB 2.0 |
| Number of USB Hub Ports | 4 ports |
| Ethernet Speed | 10/100 Base-T/TX |
| Ethernet PHY | Integrated 10BASE-T and 100BASE-TX PHY |
| Ethernet Standards | IEEE 802.3 and IEEE 802.3u |
| Ethernet Duplex Support | Full-duplex and half-duplex |
| Flow Control | Supported |
| CRC Processing | Automatic 32-bit CRC |
| Preamble Handling | Automatic generation and removal |
| Supply Voltage | 3.3 V |
| Operating Temperature Range | 0 °C to +70 °C |
| Package Type | 64-pin QFN, 9 mm x 9 mm |
| Number of Pins | 64 pins |
| Mounting Type | Surface mount |
| Lead-Free Status | Lead-free package |
| RoHS Status | Compliant |
| Integrated Ethernet MAC | Yes |
| Maximum USB Data Rate | 480 Mbit/s |
| Operating Voltage Maximum | 3.6 V |
LAN9514-JZX 64-pin qfn, 9 mm x 9 mm Pin Configuration Guide
Pin configuration for LAN9514-JZX (64-pin qfn, 9 mm x 9 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for LAN9514-JZX.
Refer to the datasheet for full pin configuration.
Typical Applications
LAN9514-JZX is suitable for 6 applications: USB Docking Stations, Embedded USB-to-Ethernet Gateways, Industrial USB Data Acquisition, Printers and Multifunction Peripherals, Game Console Peripherals, Desktop and Notebook Connectivity.
USB Docking Stations
The LAN9514-JZX fits a USB docking station because it combines a four-port Hi-Speed USB 2.0 hub with a 10/100 Ethernet controller in a single 64-pin QFN package. According to the Microchip manufacturer datasheet, docking stations are an explicit target application for the LAN9514 family. The host can therefore attach several USB peripherals while retaining a wired 10BASE-T or 100BASE-TX network path. The Ethernet section supports full- and half-duplex operation, flow control, automatic preamble handling, and 32-bit CRC processing. Implementers should reproduce the manufacturer reference layout for USB traces, Ethernet magnetics, clock support, grounding, and exposed-pad thermal management.
Recommended
Embedded USB-to-Ethernet Gateways
The LAN9514-JZX is appropriate for an embedded USB-to-Ethernet gateway where one USB host connection must become multiple USB ports and a 10/100 network interface. Its 3.3 V supply integrates naturally with 3.3 V embedded controllers, while the integrated Ethernet MAC and PHY reduce the need for a separate network interface block. The device supports 10BASE-T and 100BASE-TX, full- and half-duplex operation, and flow control. The 64-QFN package helps limit board area, although its exposed pad and the Ethernet magnetic interface require careful layout. The manufacturer reference schematic is the preferred starting point for clocking, decoupling, magnetics, and signal routing.
Recommended
Industrial USB Data Acquisition
The LAN9514-JZX can support an industrial USB data-acquisition enclosure when the system must expose several USB peripherals and provide Ethernet connectivity. Its four Hi-Speed USB 2.0 ports cover storage, configuration, and peripheral interfaces, while the integrated 10/100 Ethernet controller provides a standard network path. IEEE 802.3 and 802.3u support, automatic preamble generation and removal, and automatic 32-bit CRC handling form the verified Ethernet feature set. For equipment operating below 0 °C, the LAN9514i-JZX should be considered because the verified LAN9514-JZX rating ends at +70 °C. Enclosure thermal design, isolation requirements, and grounding must be evaluated independently of the IC.
Recommended
Printers and Multifunction Peripherals
The LAN9514-JZX is suitable for printers and multifunction peripherals that need to expose multiple USB connections and an optional 10/100 network interface. The manufacturer identifies printers among the LAN9514 family’s intended applications, reflecting its integration of a four-port USB 2.0 hub with Ethernet MAC and PHY functions. A networked printer can use the Ethernet controller while external service peripherals, removable storage, or local configuration interfaces use the USB hub ports. The device’s 3.3 V supply and compact 64-QFN package support space-conscious designs. Board designers should follow the official reference schematic for USB routing, Ethernet magnetics, clock components, power decoupling, and thermal-pad connection.
Recommended
Game Console Peripherals
The LAN9514-JZX can be used in game-console peripheral platforms where a single internal USB host connection must support several accessories and optional online connectivity. The manufacturer lists game consoles as a target application for the LAN9514/LAN9514i family. Its four Hi-Speed USB 2.0 hub ports support multiple peripherals, while the integrated 10/100 Ethernet controller provides a wired networking path where required. This combination avoids separate hub and Ethernet-controller packages, reducing board area. Firmware and host drivers must be validated against the final device configuration, and the USB and Ethernet layouts should follow the manufacturer reference design to avoid signal-integrity and electromagnetic-interference issues.
Recommended
Desktop and Notebook Connectivity
The LAN9514-JZX addresses desktop and notebook connectivity requirements by combining a four-port USB 2.0 hub with a 10/100 Ethernet controller. The manufacturer specifically identifies desktop PCs and notebook PCs among the family’s target applications. A compact 64-QFN implementation can support internal port expansion and network connectivity in systems where board space and component count are important. The Ethernet controller provides 10BASE-T and 100BASE-TX support with full- and half-duplex operation and flow control, while the USB side supports Hi-Speed operation. Platform validation should include current operating-system drivers, connector standards, Ethernet magnetic components, and the manufacturer reference PCB layout.
Recommended
Recommended Products Summary
Engineering reference data for LAN9514-JZX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LAN9514i-JZX | LAN9512-JZX |
|---|---|---|---|
| Package | 64-QFN (9x9) | 64-QFN (9x9) - same package | 64-QFN (9x9) - same package |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| USB Hub Ports | 4 ports | 4 ports | Does not provide the same four-port USB hub function |
| Ethernet Interface | 10/100 Base-T/TX | 10/100 Base-T/TX | 10/100 Ethernet controller |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V |
Key Differentiators
- Integrates four-port USB hub and Ethernet controller (vs LAN9512-JZX)
- Commercial-temperature order number (vs LAN9514i-JZX)
- Single-package USB and Ethernet connectivity (vs Separate USB hub and Ethernet interface devices)
Design Notes
Use the official Microchip LAN9514 reference-design schematic and PCB layout as the baseline for USB routing, Ethernet magnetics, clock support, decoupling, and exposed-pad connection. The 64-QFN land pattern is sensitive to assembly tolerances, and the exposed thermal pad must have a short, low-impedance connection to the ground plane. Keep the USB differential pair and Ethernet differential pairs routed with continuous reference planes, avoid unnecessary stubs, and observe the manufacturer’s component-placement and via guidance.
Decouple the 3.3 V supply locally and follow the manufacturer’s recommended capacitor network and placement. Because the LAN9514-JZX combines switching USB traffic, digital logic, and Ethernet clocking, inadequate local energy storage can produce rail disturbance that appears as communication errors rather than an obvious overload. Confirm the maximum operating voltage of 3.6 V, provide appropriate power sequencing where required, and verify that upstream 3.3 V sources remain within tolerance at every operating condition.
Preserve the controlled-impedance USB and Ethernet routes from the LAN9514-JZX to their connectors and magnetic components. Minimize via transitions in differential pairs, provide a continuous ground reference, and keep noisy switching or high-current paths away from clock and Ethernet inputs. The integrated PHY simplifies the schematic, but it does not remove the need for a carefully implemented analog and high-speed layout. Validate the final board with the manufacturer’s reference stack-up and signal-integrity guidance.
The 64-QFN exposed pad is the principal thermal path and should be soldered according to the manufacturer land pattern. Provide uninterrupted ground-pour access beneath the package and thermal vias that do not compromise return paths for adjacent signals. Actual junction temperature depends on the PCB copper area, airflow, enclosure temperature, and Ethernet magnetics; therefore, calculate the final thermal margin from the completed assembly rather than relying on package dimensions alone.
Compliance Information
The Microchip manufacturer datasheet identifies LAN9514-JZX as a lead-free, RoHS-compliant 64-pin QFN package. No explicit REACH, halogen-free, conflict-minerals, or AEC-Q100 evidence was included in the supplied verification data.