MAX4892 10/100/1000 Base-T Ethernet LAN Switch
Product Details
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.
Applications
- 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
Features and Benefits
- 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