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
