REALTEK RTL82(2)(5)(6)1 – Multi Gigabit Ethernet PHYs – MEV Elektronik GmbH
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REALTEK RTL82(2)(5)(6)1 – Multi Gigabit Ethernet PHYs

Realtek is the Market Leader for Ethernet PHYceiver.

Product Highlights and Features:

  • Supports 100M / 1G / 2.5G / 5G / 10G Ethernet
  • Supports IEEE 802.3az (Energy Efficient Ethernet)
  • Support MACsec compatible with IEEE 802.1AE, IEEE 802.1AEbn, IEEE 802.1AEbw
  • Supports Full Duplex flow control (IEEE 802.3x)
  • Supports IEEE 802.3 optional ability (Energy Efficient Ethernet and Fast Retrain)
  • Auto-Negotiation with Extended Next Page capability (XNP)
  • Supports pair swap/polarity/skew correction
  • Crossover Detection [&] Auto-Correction
  • Configurable MDI port ordering (MDI swap) for easy PCB layout
  • Supports hardware CRC (Cyclic Redundancy Check) function
  • Supports power down/link down power saving mode
  • Selectable SERDES interface to MAC control (SGMII/HiSGMII/2500BASE-X/ 5000BASE-X /1000BASE-X/ 5000BASE-R/ 10GBASE-R / SFI /USXGMII/…)
  • Built-in Wake-on-LAN (WOL) over UTP
  • Supports Interrupt function over UTP
  • Supports Parallel Detection
  • Supports PHYRSTB core power Turn-Off
  • Baseline Wander Correction
  • Selectable 3.3/1.8V signaling for MMD access
  • Supports 25/50MHz crystal or external OSC
  • Provides 25/50MHz clock source for MAC
  • Provides network customized LEDs with controllable LED Blinking Frequency and Duty Cycle
  • Self-Loopback diagnostic capability
  • Thermal management on PHY
  • Complete hardware support for Synchronous Ethernet and Precision Time Protocol (PTP) including IEEE 1588v1, v2, and 802.1AS
  • Supports SPI Flash (up to 24MB flash size)
  • Industrial grade version available


Part number:


RTL8221B-VB 2.5GB    QFN48
RTL8221BI-VB 2.5GB    QFN48 industrial Temp
RTL8221B-VM 2.5GB    QFN48  MACsec
RTL8221BI-VM 2.5GB    QFN48 industrial Temp  MACsec
RTL8251B    5GB    QFN56
RTL8251BI    5GB    QFN56 industrial Temp
RTL8251B-VM    5GB    QFN56  MACsec
RTL8251BI-VM    5GB    QFN56 industrial Temp  MACsec
RTL8261B  10GB    MRQFN 10x10mm
RTL8261BI  10GB    MRQFN 10x10mm industrial Temp

For more Details please use the “Product Inquiry Feature” below or browse to the Realtek Product Website.

Technical Data

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REALTEK RTL82(2)(5)(6)1 - Multi Gigabit Ethernet PHYs

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