Part Number: KSZ8081MNXIA-TR

Manufacturer: Microchip Technology

Description: IC TRANSCEIVER FULL 1/1 32QFN

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of KSZ8081MNXIA-TR

Datasheet  KSZ8081MNXIA-TR datasheet
Category Integrated Circuits (ICs)
Family Interface – Drivers, Receivers, Transceivers
Manufacturer Microchip Technology
Packaging Tape & Reel (TR)
Part Status Active
Type Transceiver
Protocol MII
Number of Drivers/Receivers 1/1
Duplex Full
Receiver Hysteresis
Data Rate
Voltage – Supply 1.8V, 2.5V, 3.3V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 32-VFQFN Exposed Pad
Supplier Device Package 32-QFN (5×5)


The KSZ8081MNXIA-TR is an Ethernet physical-layer transceiver with high integration designed for data transmission and reception over standard CAT-5 unshielded twisted pair (UTP) cables. It is a flexible component with numerous characteristics and applications, making it a key component of a variety of electronic devices. In this comprehensive tutorial, we will delve into the KSZ8081MNXIA-TR’s essential features, applications, and benefits, providing you with a thorough grasp of its capabilities and applications.

Understanding the KSZ8081MNXIA-TR

The KSZ8081MNXIA-TR is a 10BASE-T/100BASE-TX Ethernet physical-layer transceiver with a single supply. Its high level of integration distinguishes it, which not only simplifies board layout but also lowers board cost. Here are the key features that distinguish the KSZ8081MNXIA-TR:

Single-Chip Excellence

The KSZ8081MNXIA-TR is a single chip that contains a complete 10Base-T/100Base-TX Ethernet transceiver. This means that it complies with IEEE 802.3 regulations, making it a dependable option for Ethernet communication.

Flexible Interfaces

It boasts two interface options to suit your specific requirements:

  • MII Interface Support (KSZ8081MNX):This is perfect for seamless integration with MII-compliant Ethernet MAC processors and switches.
  • RMII v1.2 Interface (KSZ8081RNB):This version supports a 50 MHz reference clock output to MAC, and even allows for an input of a 50 MHz reference clock.
  1. Copper Repeater Support:The KSZ8081MNXIA-TR is capable of both data transmission and signal reinforcement. It supports back-to-back mode for a 100 Mbps copper repeater.
  2. Efficient Management:The MDC/MDIO administration interface allows you to easily configure PHY registers, easing the management process.
  3. Customizable Alerts:A programmable interrupt output allows you to personalize warnings to your individual requirements, improving system monitoring and control.
  4. Status Indicators:It is critical to understand the status of your network. The KSZ8081MNXIA-TR has LED outputs for connection, activity, and speed status information, making it simple to understand the performance of your network at a glance.
  5. Termination Simplified:The transceiver contains on-chip differential pair termination resistors, simplifying board architecture and lowering costs.
  6. Wander Correction:This component includes baseline wander correction to ensure signal integrity, ensuring consistent and reliable data transfer.
  7. Auto MDI/MDI-X:The KSZ8081MNXIA-TR includes HP Auto MDI/MDI-X, which identifies and corrects cable connections, whether straight-through or crossover. This feature can be turned off or on as needed.
  8. Auto-Negotiation:Manual configuration headaches are over. For best performance, the transceiver offers auto-negotiation, intelligently picking the highest link-up speed (10/100 Mbps) and duplex (half/full).
  9. Power Efficiency:Power-saving modes, such as power-down options, are not only environmentally benign, but also help optimize energy consumption, lowering operational expenses.
  10. Cable Health Check:The LinkMD TDR-based cable diagnostics function is a network maintenance savior. It detects and helps address problems caused by bad copper wiring, ensuring that your network runs smoothly.
  11. Fault Detection:The Parametric NAND Tree support detects faults between the chip’s I/Os and the board, making troubleshooting and maintenance easier.
  12. ESD Protection:The KSZ8081MNXIA-TR is built to endure the rigors of real-world usage, with a Human Body Model (HBM) Electrostatic Discharge (ESD) rating of 6 kV, making it ideal for a variety of settings.
  13. Loopback Modes:Loopback modes allow data to be routed back to the transceiver for diagnostic purposes, assisting in testing and troubleshooting.
  14. Power Supply Options:The transceiver runs on a single 3.3V power source and has VDD I/O options of 1.8V, 2.5V, or 3.3V, giving you design freedom.
  15. Integrated Regulator:It includes a 1.2V regulator for the core, which simplifies power management in your system.
  16. Compact Packaging:The KSZ8081MNXIA-TR is available in a 32-pin (5 mm 5 mm) QFN packaging, making it simple to include into your designs while not taking up too much space.

The KSZ8081MNXIA-TR is an Ethernet transceiver with a wealth of features that simplifies network design, improves dependability, and ensures efficient data transmission. Its adaptability, diagnostic capabilities, and power-saving features make it an excellent choice for a wide range of applications, including game consoles, IP phones, set-top boxes, and printers. The KSZ8081MNXIA-TR contains the characteristics you need to construct a durable and efficient network interface, whether you’re designing a consumer electronics item or an industrial application.

Benefits of Using KSZ8081MNXIA-TR

The following are some of the primary advantages of incorporating the KSZ8081MNXIA-TR into your electrical devices:

  • Cost and Space Efficiency:Its integrated architecture, which includes on-chip termination resistors and a built-in regulator, lowers board costs and simplifies layout, making it an affordable option for your ideas.
  • Reliability:The KSZ8081MNXIA-TR improves network dependability by quickly identifying and resolving faults thanks to features like LinkMD® cable diagnostics and loopback modes.
  • Versatility:The KSZ8081MNXIA-TR can be a valuable component in a variety of applications, including game consoles, IP phones, set-top boxes, TVs, and printers.
  • Easy Integration:The transceiver has many interface options, allowing for simple interaction with various networking components.
  • Power Efficiency:Its power-saving settings aid in lowering energy usage, making it an environmentally responsible option.

Applications of KSZ8081MNXIA-TR

The KSZ8081MNXIA-TR is a versatile networking component with applications spanning a wide array of electronic devices:

  1. Game Consoles: Enhancing online gaming and streaming experiences with low latency and reliable connectivity.
  2. IP Phones: Ensuring clear and efficient communication for VoIP services and corporate networks.
  3. IP Set-Top Boxes: Powering on-demand content and interactive television services.
  4. IP TVs: Enabling smart TV connectivity to streaming platforms and delivering consistent high-quality viewing.
  5. LAN on Motherboard (LOM): Integrating Ethernet connectivity into motherboards for desktop and server systems, with a focus on energy efficiency.
  6. Printers: Facilitating networked printing in office environments and maintaining smooth printing operations.

The versatility, diagnostic capabilities, and power efficiency of the KSZ8081MNXIA-TR make it a crucial component in a wide range of applications, enabling seamless connectivity and increased performance.


The KSZ8081MNXIA-TR is a versatile and highly integrated Ethernet transceiver that can be a valuable addition to a wide range of electronic applications. Its design, diagnostic features, and power efficiency make it a practical choice for projects such as game consoles, IP phones, set-top boxes, and various Ethernet-based devices.

If you’re interested in exploring the potential of the KSZ8081MNXIA-TR for your business, you’ve come to the right place. ICRFQ is a well-established electronic component distributor in China, and we’re here to assist you in acquiring this impressive device. Our commitment is to offer high-quality products at competitive prices, ensuring you have access to the components you need for your projects. Feel free to reach out to us, and let’s discuss how the KSZ8081MNXIA-TR can meet your networking requirements.

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