General Description
The MAX4890/MAX4891/MAX4892 high-speed analog switches meet the needs of 10/100/1000 Base-T applications. These devices switch the signals from two interface transformers and connect the signals to a single 10/100/1000 Base-T Ethernet PHY, simplifying docking station design and reducing manufacturing costs. The MAX4890/MAX4891/MAX4892 can also route signals from a common interface transformer to two different boards in board-redundancy applications.

FEATUREs
♦ Single +3.0V to +3.6V Power-Supply Voltage
♦ Low On-Resistance (RON): 4Ω (typ), 6.5Ω (max)
♦ Ultra-Low On-Capacitance (CON): 6.5pF (typ)
♦ Low < 200ps Bit-to-Bit Skew
♦ -3dB Bandwidth: 1GHz
♦ Optimized Pin-Out for Easy Transformer and PHY Interface
♦ Built-In LED Switches for Switching Indicators to Docking Station
♦ Low 450µA (max) Quiescent Current
♦ Bidirectional 8 to 16 Multiplexer/Demultiplexer
♦ Space-Saving Packages
   32-Pin, 5mm x 5mm, TQFN Package
   36-Pin, 6mm x 6mm, TQFN Package

APPLICATIONs
  Notebooks and Docking Stations
  Servers and Routers with Ethernet Interfaces
  Board-Level Redundancy Protection
  SONET/SDH Signal Routing
  T3/E3 Redundancy Protection
  Video Switching