Ethernet Transceiver, 100 Mbps, Pqfp-208; Device Type:Ethernet Switch Phy; Supported Standards:Ieee 802.3; Supply Voltage Min:2V; Supply Voltage Max:2.3V; Ic Case/Package:Pqfp; No. Of Pins:208Pins; Ic Mounting:Surface Mount Rohs Compliant: Yes |Microchip KSZ8999I

KSZ8999I – 9-Port 10/100 Ethernet Switch IC – Microchip Technology

Optimize your network infrastructure with the Microchip KSZ8999I, a high-integration 9-port Ethernet switch PHY IC designed for reliable 10/100 Mbps connectivity. This surface-mount solution simplifies embedded networking designs while delivering robust performance for industrial and commercial applications. PCX guarantees authentic Microchip components with same-day shipping and dedicated technical support.

Key Features

• 9-Port Integration: Combines switch fabric and PHY transceivers in single chip
• IEEE 802.3 Compliance: Full support for Ethernet standards
• Low Power Operation: 2.0V – 2.3V supply voltage range
• Surface-Mount Design: 208-pin PQFP package for automated assembly
• Industrial Temperature Rated: Reliable performance in demanding environments

Technical Specifications

• Device Type: Ethernet Switch PHY with integrated MAC
• Data Rate: 10/100 Mbps per port
• Package: 208-BFQFP (28x28mm)
• Mounting: Surface Mount Technology (SMT)
• Compliance: RoHS certified

Typical Applications

• Industrial control systems and PLCs
• Embedded networking equipment
• Legacy network switch upgrades
• Medical device connectivity
• Test and measurement instrumentation

About Microchip Technology

Microchip Technology Inc. is a leading provider of smart, connected, and secure embedded control solutions. With over three decades of industry leadership, Microchip delivers high-reliability semiconductor products for mission-critical applications across automotive, industrial, and computing markets.

The company’s Ethernet portfolio is renowned for robust performance in harsh environments, featuring advanced power management and EMI reduction technologies. Microchip maintains stringent quality certifications including IATF 16949, making their components trusted solutions for long-lifecycle designs where reliability is paramount.

About Ethernet Switch PHY ICs

Ethernet PHY (Physical Layer) transceivers form the foundation of wired network connectivity, handling the analog signal transmission and reception over twisted-pair cables. Integrated switch PHY ICs like the KSZ8999I combine multiple physical interfaces with switching logic, eliminating external components.

These highly integrated solutions enable compact network designs with reduced BOM costs while providing deterministic performance for real-time industrial systems. They serve as critical interconnect solutions in applications requiring reliable local data transfer between multiple devices or subsystems.

Packaging Information

Available in manufacturer-factory-sealed trays. Contact PCX sales for tape and reel customization options.

Frequently Asked Questions

Q: Is this IC suitable for industrial temperature environments?
A: Yes, the KSZ8999I is rated for industrial operating temperature ranges.

Q: Does this part require external magnetics?
A: Yes, standard Ethernet magnetics modules are required for each port per IEEE 802.3 specifications.

Q: Can I use this in new designs despite “Obsolete” status?
A: While not recommended for new designs, PCX maintains stock for legacy system maintenance and lifecycle extensions.

Q: What is the power consumption per port?
A: Refer to the datasheet for detailed power characteristics, but typical operation is <150mW per 100Mbps port.

Q: Is driver software included?
A: Microchip provides reference drivers and configuration utilities through their developer portal.

Q: Does PCX provide technical documentation?
A: Yes, download the complete KSZ8999I datasheet from our resources section.

Product images are representational. Refer to datasheet for exact specifications.

Secure Your Networking Components Today!

Designing reliable embedded systems requires trusted components. PCX has the KSZ8999I in stock and ready for immediate shipment. Order by 3PM EST for same-day fulfillment! Contact our technical team for design support or volume pricing.