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Ethernet Controller, Ethernet Switch, IEEE 802.3, 3 V, 3.6 V, QFN, 56 Pins


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Technical Datasheet:
LAN9303-ABZJ   Datasheet
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Product Overview

The LAN9303-ABZJ is a 3-port high-performance small-footprint full-featured managed Ethernet Switch optimized for consumer and embedded electronics designs which have a rapid development cycle and require switching functionality, flexibility and ease of integration. Featuring the industry's smallest form factor 3-port switch, the LAN9303 supports compact PCB design and MII/RMII/Turbo MII (media independent, reduced media independent and turbo media independent interfaces). This device supports Turbo MII mode to accomplish network speeds up to 200Mbps. The virtual PHY features mimics a single PHY connection through the MII/RMII/Turbo MII interface to the host SoC, which can reduce software development time. This feature also allows system designers to swap the single PHY and Ethernet switch to create multiple SKUs from the same software driver. Additionally, the LAN9303 offers the industry's highest (±8kV/15kV) per-port ESD protection.
  • IEEE 802.1Q VLAN support (up to 16 VLAN groups)
  • Industry's highest (±8kV/15kV) per-port ESD protection
  • IGMP v1/v2 monitoring for multicast packet filtering
  • Up to 200Mbps network speed via a turbo MII interface
  • Optional EEPROM or external CPU serial management support via an I²C™ interface
  • Virtual PHY feature simplifies software development
  • 42 per-port MIB counters for efficient network management


Embedded Design & Development, Consumer Electronics, Audio, Test & Measurement, Industrial, Automation & Process Control


ESD sensitive device, take proper precaution while handling the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Product Information

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Ethernet Switch

IEEE 802.3





Surface Mount




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Technical Documents (3)

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1,113 UK stock available for 3-4 business days delivery

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