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

The MAX4927 meets the needs of high-speed differential switching, including that of Gigabit Ethernet (10/100/1000) Base-T switching as well as LVDS and LVPECL switching. The MAX4927 provides enhanced ESD protection up to ±15kV and excellent high-frequency response, making the device especially useful for interfaces that must go to an outside connection.

The MAX4927 offers extremely low capacitance (CON), as well as low on-resistance (RON), for low-insertion loss and very wide bandwidth. In addition to the four pairs of DPDT switches, the MAX4927 provides LED switching for laptop computer/docking station use.

The MAX4927 is pin-to-pin equivalent to the PI3L500-A and STMUX1000L. The MAX4927 can replace either device in those applications, improving ESD protection and eliminating external ESD components. The MAX4927 is available in a space-saving 56-pin TQFN package and operates over the extended -40°C to +85°C temperature range.

Applications

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

* ESD Protection

* ±15kV–IEC 61000-4-2 Air-Gap Discharge

* ±8kV–IEC 61000-4-2 Contact Discharge

* ±15kV–Human Body Model

* Single +3.0V to +3.6V Power-Supply Voltage

* Low 4Ω (typ), 6.5Ω (max) On-Resistance (RON)

* Ultra-Low 8pF (typ) On-Capacitance (CON)

* -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

* Low 450µA (max) Quiescent Current

* Bidirectional 8 to 16 Multiplexer/Demultiplexer

* Standard Pin Out, Matching the PI3L500-A and STMUX1000L

* Space-Saving Lead-Free Package

* 56-Pin, 5mm x 11mm, TQFN Package