10/100 Base-Tx/Fx Physical Layer Transceiver 48 Lqfp 7X7X1.4Mm T/R Rohs Compliant: Yes |Microchip KSZ8721BLI-TR

KSZ8721BLI-TR – 10/100 Base-Tx/Fx Physical Layer Transceiver – Microchip Technology

Optimize your network infrastructure with the KSZ8721BLI-TR from Microchip Technology, a high-performance physical layer transceiver (PHY) enabling reliable 10/100 Mbps Ethernet connectivity. This compact IC simplifies integration while delivering energy-efficient operation, making it ideal for space-constrained embedded systems. PCX guarantees authentic Microchip components with same-day shipping and dedicated technical support.

Key Features

• Interface Protocol: MII/RMII support for flexible MAC layer connections
• Voltage Range: 3V–3.6V operation with low power consumption
• Temperature Resilience: Industrial-grade -40°C to 85°C operating range
• Duplex Capability: Full-duplex data transmission
• Compact Design: 48-LQFP package (7x7mm) for high-density PCB layouts
• Compliance: RoHS-certified for environmental safety

Technical Details

This single-port transceiver integrates MAC/PHY functionality using either MII or RMII interfaces. Engineered for surface-mount assembly, it features a 48-pin LQFP case with 1.4mm profile. The device supports 10BASE-T/100BASE-TX (copper) and 100BASE-FX (fiber) standards via configurable drivers and receivers. Its robust design ensures signal integrity across industrial temperature environments.

Typical Applications

• Industrial automation controllers & PLC systems
• Embedded networking modules
• IoT gateways and edge computing devices
• Network switches and routers
• Medical monitoring equipment

About Microchip Technology

Microchip Technology stands at the forefront of embedded control solutions, with over three decades of innovation in microcontrollers, analog, and connectivity products. Their commitment to quality is evidenced by rigorous testing protocols and industry-leading reliability metrics, making them a preferred partner for mission-critical applications worldwide.

The company’s extensive IP portfolio and vertical integration ensure consistent component performance across production batches. Microchip maintains AS9100 and IATF 16949 certifications, underscoring their dedication to aerospace, automotive, and industrial quality standards that align with PCX’s commitment to supplying verified components.

About Physical Layer Transceivers

Physical Layer Transceivers (PHYs) serve as the critical interface between digital processing systems and analog network media. They handle essential functions like signal modulation, noise cancellation, and synchronization, enabling stable data transmission over copper or fiber optic cabling. Without robust PHY components, network reliability and speed targets cannot be consistently achieved.

Modern PHY ICs like the KSZ8721 series integrate advanced features such as auto-negotiation, wake-on-LAN, and energy-efficient Ethernet (EEE), reducing system power by up to 70%. Their role extends beyond simple data conversion to include signal conditioning and diagnostic capabilities vital for maintaining network integrity in electrically noisy environments.

Packaging Options

Available in Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® formats for automated assembly compatibility. Contact PCX for reel quantities and custom packaging requirements.

FAQs

Q: Does this support auto-MDIX for simplified cabling?
A: Yes, the KSZ8721BLI-TR features automatic MDI/MDIX crossover detection, eliminating manual cable configuration.

Q: Is fiber optic connectivity supported?
A: The 100BASE-FX capability enables fiber optic connections using external transceivers via the MII interface.

Q: What cable lengths are supported in 100BASE-TX mode?
A: It complies with IEEE 802.3 standards for 100m reach over Category 5 UTP cabling.

Q: Can this interface with 3.3V microcontrollers?
A: Absolutely, its 3.0–3.6V supply range ensures direct compatibility with common 3.3V logic families.

Q: How does this differ from a standard Ethernet controller?
A: As a PHY device, it handles the physical signaling layer only, requiring a separate MAC controller for full Ethernet stack implementation.

Q: Where can I find design resources?
A> PCX provides direct access to the KSZ8721BLI-TR datasheet and application notes through our secure product portal upon request.

Order Today for Immediate Fulfillment!

Streamline your networking designs with guaranteed authentic Microchip transceivers. PCX maintains ready stock of KSZ8721BLI-TR with no minimum order quantities. Submit your purchase request by 3 PM EST for same-day shipping backed by our technical support team.

Product image is representational; refer to datasheet for exact specifications.