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MAX4890

Maxim Integrated Products
Part Number MAX4890
Manufacturer Maxim Integrated Products
Description 10/100/1000 Base-T Ethernet LAN Switch
Published Jun 1, 2009
Detailed Description 19-3577; Rev 1; 8/05 10/100/1000 Base-T Ethernet LAN Switch General Description www.datasheet4u.com Features ♦ ♦ ♦ ♦ ♦...
Datasheet PDF File MAX4890 PDF File

MAX4890
MAX4890

Overview
19-3577; Rev 1; 8/05 10/100/1000 Base-T Ethernet LAN Switch General Description www.
datasheet4u.
com 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 MAX4890/MAX4891/MAX4892 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.
♦ 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 PART MAX4890ETJ MAX4891ETJ MAX4892ETX Ordering Information PINPACKAGE 32 TQFN 32 TQFN 36 TQFN LED SWITCHES — 1 3 PKG CODE T-3255-4 T-3255-4 T-3666-3 All devices are available in the -40°C to +85°C operation temperature range.
Pin Configurations 1B1 SEL 0B1 0B2 1B2 A0 A1 V+ TOP VIEW ...


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