1000 Base-T, ±15kV ESD Protection LAN Switches

High-Speed Analog Switches for Gigabit Ethernet Applications that Switch the Signals from Two Interface Transformers and Connect Them to a Single Ethernet Controller

Please check latest availability status for a specific part variant.


The MAX4890E/MAX4892E meet the needs of high-speed differential switching. The devices handle the needs of Gigabit Ethernet (10/100/1000) Base-T switching as well as LVDS and LVPECL switching. The MAX4890E/MAX4892E provide enhanced ESD protection up to ±15kV, and excellent high-frequency response, making the devices especially useful for interfaces that must go to an outside connection.

Both devices provide extremely low capacitance (CON), as well as low resistance (RON), for low-insertion loss and very wide bandwidth. In addition to the four pairs of DPDT switches, the MAX4892E provides LED switching for laptop computer/docking station use.

The MAX4890E/MAX4892E are pin-for-pin equivalents to the MAX4890/MAX4892 and can replace these devices for those applications requiring the enhanced ESD protection. Both devices are available in space-saving TQFN packages and operate over the standard -40°C to +85°C temperature range.

MAX4890E, MAX4892E: Typical Operating Circuit MAX4890E, MAX4892E: Typical Operating Circuit Enlarge+

Key Features

  • ±15kV ESD Protected Per MIL-STD-883, Method 3015
  • Single +3.0V to +3.6V Power-Supply Voltage
  • Low On-Resistance (RON): 4Ω (typ), 6.5Ω (max)
  • Ultra-Low On-Capacitance (CON): 8pF (typ)
  • -23dB Return Loss (100MHz)
  • -3dB Bandwidth (650MHz)
  • Optimized Pin Out for Easy Transformer and PHY Interface
  • Built-In LED Switches for Switching Indicators to Docking Station (MAX4892E)
  • Low 450µA (max) Quiescent Current
  • Bidirectional 8 to 16 Multiplexer/Demultiplexer
  • Standard Pin Out, Matching the MAX4890 and MAX4892
  • Space-Saving Lead-Free Packages
    • 32-Pin, 5mm x 5mm, TQFN Package
    • 36-Pin, 6mm x 6mm, TQFN Package


  • Board-Level Redundancy Protection
  • Notebooks and Docking Stations
  • Servers and Routers with Ethernet Interfaces
  • SONET/SDH Signal Routing
  • T3/E3 Redundancy Protection
Part NumberProtocolFunctionsConfig.ChannelsNormal PositionVSUPPLY (Single)
VSUPPLY (Single)
minmaxmaxmaxmaxSee Notes
MAX4890E LANMux2-to-18Closed33.66.565050506.53.5
$3.26 @1k
See All Switches and Multiplexers (Mid and High Voltage) (299)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Product Reliability Reports: MAX4892E.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


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