Microchip 128-Pin QFP Controller IC 3.3 V 100 Mbps ISA Full Duplex LAN91C111-NS

Microchip LAN91C111-NS is a highly integrated 128-pin QFP controller IC designed for Ethernet applications. Operating at 3.3 V supply voltage with a maximum data rate of 100 Mbps, this controller supports full duplex communication and complies with IEEE 802.3u and IEEE 802.3 standards, making it suitable for fast networking solutions.

This surface-mounted device comes in a compact QFP package sized 20 mm by 14 mm with a height of 3.4 mm, suitable for space-constrained printed circuit boards used in industrial and Ethernet interface equipment.

The IC supports an internal loopback mode which allows for self-testing and diagnostics during system development or maintenance. Its operating temperature range of 0°C to 70°C ensures reliable performance in typical industrial environments.

With a supply current of 140 mA at 3.3 V, the LAN91C111-NS is energy efficient. It is designed primarily for interface use in systems utilizing ISA communication and full duplex Ethernet capabilities to enhance data throughput.

Operates at a fixed 3.3 V supply voltage for stable controller operation. Full duplex communication supports simultaneous send and receive, enhancing network performance. Compliant with IEEE 802.3u and 802.3 Ethernet standards for compatibility.

128-pin QFP surface mount package facilitates compact PCB designs. Internal loopback mode enables testing without external equipment. Industrial operating temperature range from 0°C to 70°C ensures wide usability. 140 mA supply current consumption balances power and performance.

Ideal for network interface controllers and embedded Ethernet systems. No automotive standard certification; intended for industrial and commercial use.

This product is suitable for use in industrial automation, communications equipment, and embedded systems requiring Ethernet interface ICs with efficient full duplex capabilities. It enables designers to build reliable Ethernet interfaces adhering to common industry standards.

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