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Microchip LAN9668x Family of Ethernet Switches

Part of a compact and cost-effective product group

Microchip’s LAN9668-I/9MX and LAN9668-9MX devices are 8-port switches for industrial and commercial applications, respectively, outfitted with Arm® Cortex®-A7 central processing units (CPUs), supporting TSN IEEE standards for communication in industrial settings.

These include IEEE 1588v2 and IEEE 802.1AS-2020 for Precision Timing, IEEE 802.1Qci for per-stream filtering and policing, IEEE 802.1Qav and IEEE 802.1Qbv for Traffic Shaping and IEEE 802.1CB for Seamless Redundancy, as well as IEC-62439-2 (Media Redundancy Protocol) and ODVA-DLR and IEC-61158-6-10 for Media Redundancy.

Factory automation is increasing efficiencies, from reducing handling and storage to improving throughput. Connected warehouses and other industrial ecosystems with converged Information Technology (IT) and Operational Technology (OT) architectures rely on Time Sensitive Networking (TSN) and Ethernet for precise timing, synchronization and connectivity of devices including cameras, bar code readers, scanners and conveyors. These ecosystems require next-generation network technology of the LAN9668 family to interconnect device, sensor and equipment communication.

In addition to the LAN9668 family and LAN8814 Ethernet PHY, Microchip provides their associated IStaX/SMBStaX and WebStaX network operating systems. This completes the hardware and software journey to arrive at a rapid time to market. These include a reproducible reference design available as a board design or kit of Microchip parts including TSN switches, Ethernet PHYs, clock devices and oscillators. This integrated solution is compliant to all network standards, simplifying developers’ first designs.


  • 802.1Qbv (TAS)
  • 802.1Qch (CQF)
  • 802.1Qci (PSFP)
  • 802.1AS-2020
  • 802.1CB (FRER)
  • 802.1Qbu/802.3br (Frame Preemption)


  • VSC6817 IStaX Linux Application Software Package for Managed Ethernet Switches
  • Up to 8x 1G ports
  • Fully managed L2 switching and L3 forwarding features
  • Industrial Temperature range
  • Easy upgrade within SparX-5i family to higher bandwidth


Development Tools

The LAN9668-I/9MX and LAN9668-9MX TSN Ethernet switches are supported by the VSC6817SDK IStaX Linux Application Software, an industrial Ethernet switch software solution supporting Microchip's managed Ethernet switch devices. The VSC6817SDK IStaX Linux Network Operating System is an industrial Ethernet switch software solution also supporting Microchip's managed Ethernet switch devices. The SMBStaX Linux Network Operating System and WebSTaX Linux Network Operating System are available to commercial designers and follow the long-term support Linux Kernel. These solutions all are highly integrated with advanced L2+ switch features. In addition, reference designs and evaluation boards also are available from Microchip and the company’s distribution partners, enabling easy design-in.

Evaluation Board: EVB-LAN9668

The EVB-LAN9668 is the evaluation board for the LAN9668 TSN Switch. The EVB-LAN9668 implements 8 Gigabit Ethernet ports with the LAN9668 Switch and LAN8814 PHYs.