Products > Integrated Circuits (ICs) > Interface ICs > KSZ8081RNDIA-TR

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Ethernet Controller, 100 Mbps, IEEE 802.3, 3.135 V, 3.465 V, QFN, 24 Pins

  • Package/Case :
  • VFQFN-24
  • Product Categories :
  • Drivers, Receivers, Transceivers
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 5000


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KSZ8081RNDIA-TR Product Details

• Single-Chip 10BASE-T/100BASE-TX IEEE 802.3 Compliant Ethernet Transceiver
• RMII v1.2 Interface Support with a 50 MHz Reference Clock Output to MAC, and an Option to Input a 50 MHz Reference Clock
• RMII Back-to-Back Mode Support for a 100 Mbps Copper Repeater
• MDC/MDIO Management Interface for PHY Register Configuration
• Programmable Interrupt Output
• LED Outputs for Link and Activity Status Indication
• On-Chip Termination Resistors for the Differential Pairs
• Baseline Wander Correction
• HP Auto MDI/MDI-X to Reliably Detect and Correct Straight-Through and Crossover Cable Connections with Disable and Enable   Option
• Auto-Negotiation to Automatically Select the Highest Link-Up Speed (10/100 Mbps) and Duplex (Half/Full)
• Power-Down and Power-Saving Modes
• LinkMD® TDR-Based Cable Diagnostics to Identify Faulty Copper Cabling
• Parametric NAND Tree Support for Fault Detection Between Chip I/Os and the Board
• HBM ESD Rating (6 kV)
• Loopback Modes for Diagnostics
• Single 3.3V Power Supply with VDD I/O Options for 1.8V, 2.5V, or 3.3V
• Built-In 1.2V Regulator for Core
• Available in 24-pin 4 mm x 4 mm QFN Package

Target Applications
• Game Consoles
• IP Phones
• IP Set-Top Boxes
• IP TVs
• Printers
General Description
The KSZ8081RND is a single-supply 10BASE-T/100BASE-TX Ethernet physical-layer transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable.
The KSZ8081RND is a highly-integrated PHY solution. It reduces board cost and simplifies board layout by using
on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2V core,
and by offering 1.8/2.5/3.3V digital I/O interface support.
The KSZ8081RND offers the Reduced Media Independent Interface (RMII) for direct connection to RMII-compliant
MACs in Ethernet processors and switches.
As the power-up default, the KSZ8081RND uses a 25 MHz crystal to generate all required clocks, including the
50 MHz RMII reference clock output for the MAC. The KSZ8081RND is the version that takes in the 50 MHz RMII reference clock as the power-up default.
To facilitate system bring-up and debugging in production testing and in product deployment, parametric NAND tree support enables fault detection between KSZ8081RND I/Os and the board. LinkMD® TDR-based cable diagnostics
identify faulty copper cabling.
The KSZ8081RND is available in 24-pin, lead-free QFN packages.



    • Single-chip 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet transceiver
    • MII interface support (KSZ8081MNX)
    • RMII v1.2 Interface support with a 50MHz reference clock output to MAC, and an option to input a 50MHz reference clock (KSZ8081RNB)
    • RMII back-to-back mode support for a 100Mbps copper repeater
    • MDC/MDIO management interface for PHY register configuration
    • Programmable interrupt output
    • LED outputs for link and activity status indication
    • On-chip termination resistors for the differential pairs
    • Baseline wander correction
    • HP Auto MDI/MDI-X to reliably detect and correct straight-through and crossover cable connections with disable and enable option
    • Auto-negotiation to automatically select the highest linkup speed (10/100Mbps) and duplex (half/full)
    • Power-down and power-saving modes
    • LinkMD® TDR-based cable diagnostics to identify faulty copper cabling
    • Parametric NAND Tree support for fault detection between chip I/Os and the board
    • Loopback modes for diagnostics
    • Single 3.3V power supply with VDD I/O options for 1.8V, 2.5V, or 3.3V
    • Built-in 1.2V regulator for core
  • Available in 24-pin (4mm x 4mm) QFN package, 32-pin (5mm x 5mm) QFN package or 48-pin (7mm x 7mm) LQFP package

KSZ8081RNDIA-TR Pin Diagram
(Picture:Pinout / Diagram)

Technical Parameters

  • Type
  • Transceiver
  • Protocol
  • RMII
  • Number of Drivers/Receivers
  • 1/1
  • Duplex
  • Full
  • Voltage Supply
  • 1.8V, 2.5V, 3.3V
  • Operating Temperature
  • -40??C ~ 85??C
  • Mounting Type
  • Surface Mount
  • Package / Case
  • 24-VFQFN Exposed Pad
  • Supplier Device Package
  • 24-QFN (4x4)

KSZ8081RNDIA-TR Documents

  • KSZ8081 Technical Documentation of Application Note
  • KSZ8081 Technical Documentation of Application Note
  • KSZ8081 Technical Documentation of Application Note

KSZ8081RNDIA-TR Related Products

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  • **alk ***

    Rasante Lieferung, alles ganz prima!!! Herzlichen Dank!!!

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Estimated Delivery Time: Dec 13 - Dec 18 days (choose Expedited at checkout).

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that KSZ8081RNDIA-TR is the original manufacturer or agent of MICROCHIP?
We have a professional business development department to strictly test and verify the qualifications of MICROCHIP original manufacturers and agents. All MICROCHIP suppliers must pass the qualification review before they can publish their KSZ8081RNDIA-TR devices; we pay more attention to the channels and quality of KSZ8081RNDIA-TR products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of KSZ8081RNDIA-TR chips? Including MICROCHIP original factory information, Drivers, Receivers, Transceivers application, KSZ8081RNDIA-TR pictures?
You can use Jotrin's intelligent search engine, or filter by Ethernet PHY Products category, or find it through Microchip Technology, Inc Information page.
Q: Are the MICROCHIP's KSZ8081RNDIA-TR price and stock displayed on the platform accurate?
The MICROCHIP's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for KSZ8081RNDIA-TR, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Q: What is the process for returns or replacement of KSZ8081RNDIA-TR?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the KSZ8081RNDIATR we delivered, we will accept the replacement or return of the KSZ8081RNDIA-TR only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of KSZ8081RNDIA-TR.
(3)The KSZ8081RNDIA-TR is unused and only in the original unpacked packaging.
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(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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Microchip Technology, Inc

Microchip Technology Inc. is a leading manufacturer of microcontroller and analog products, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Microchip offers outstanding technical support along with d...
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