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MAX4928A, MAX4928B
DisplayPort/PCIe Passive Switches

The MAX4928A/MAX4928B Route Signals Between a GMCH and Either a PCIe 2.0 Socket or DisplayPort Connector


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Description
FULL DATA SHEET (PDF, 160kB)
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The MAX4928A/MAX4928B high-speed passive switches route PCI Express® (PCIe) data and/or DisplayPort™ signals between two possible destinations in desktop or laptop PCs. The MAX4928A is intended to be used with the ATX form factor desktop PCs, while the MAX4928B is expected to be used in the BTX form factor.

The MAX4928A/MAX4928B are hex double-pole/double-throw (6 x DPDT) switches. The MAX4928A/MAX4928B feature a single digital control input (SEL) to switch signal paths and a latch input (LE) that holds the switches in a given state.

The MAX4928A/MAX4928B are fully specified to operate from a single +3.3V (typ) power supply. The MAX4928A/MAX4928B are available in an industry standard 5mm x 11mm, 56-pin TQFN package. Both devices operate over the -40°C to +85°C extended temperature range.

Key Features   Applications/Uses
  • Single +3.3V Power Supply Voltage
  • Supports PCIe Gen I, Gen II, and DisplayPort
    • Data Rates > 5Gbps
  • Excellent Return Loss > 12dB at 2.5GHz
  • Six Bidirectional Pairs of Switches
    • All Switching in One Device
  • Low 800µA (max) Supply Current
  • Small 5mm x 11mm, 56-Pin TQFN Package
  • Industry Standard Pinouts

 
  • Desktop PCs
  • Notebook PCs

    Key Specifications:   Switches and Multiplexers (Low Voltage)
    Part Number Configuration Number of Channels Normally (Open/Closed) VSUPPLY, Single (min) (V) VSUPPLY, Single (max) (V) Bandwidth (MHz) IL (OFF) (max) (nA) tON (max) (nS) tOFF (max) (nS) Price**
    MAX4928A  1:2 Switch 6 Bi-Directional 3 3.6 10,000 8 120 50 $2.65 @ 1k
    MAX4928B  1:2 Switch 6 Bi-Directional 3 3.6 10,000 8 120 50 $2.65 @ 1k
    MAX4929A   -   -   -   -   -   -   -   -   -   
    See All Switches and Multiplexers (Low Voltage) (158)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX4928A, MAX4928B: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-4030; Rev 1; 2008-12-01
    This page last modified: 2009-04-02


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