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MAX4890, MAX4891, MAX4892
10/100/1000 Base-T Ethernet LAN Switch


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Description
FULL DATA SHEET (PDF, 288kB)
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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.

The MAX4890/MAX4891/MAX4892 switches provide an extremely low capacitance and on-resistance to meet Ethernet insertion and return-loss specifications. The MAX4891/MAX4892 feature one and three built-in LED switches, respectively.

The MAX4890/MAX4891/MAX4892 are available in space-saving 32- and 36-lead TQFN packages, significantly reducing the required PC board area. These devices operate over the -40°C to +85°C temperature range.

Key Features   Applications/Uses
  • Single +3.0V to +3.6V Power-Supply Voltage
  • Low On-Resistance (RON): 4 (typ), 6.5 (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

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

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    Document Ref.: 19-3577; Rev 1; 2005-08-09
    This page last modified: 2006-06-22




             



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