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MAX3640
3.3V, 622Mbps LVDS, Dual 4:2 Crosspoint Switch

622Mbps Protection Switching with Zero Jitter Accumulation

Not Recommended for New Designs
Part Number Replacement Explanation
MAX3640UCM n/a This product is being discontinued and is subject to Last Time Buy, after which new orders can not be placed.
MAX3640UCM+ n/a
MAX3640UCM+T n/a
MAX3640UCM-T n/a


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Description
FULL DATA SHEET (PDF, 336kB)
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The MAX3640 is a dual-path crosspoint switch for use at OC-12 data rates. The MAX3640 can be used to receive and transmit 622Mbps low-voltage differential signals (LVDS) across a backplane with minimum jitter accumulation. Each path incorporates input buffers, multiplexers, a crosspoint switch, and output drivers. The four output channels have a redundant set of outputs for test or fanning purposes. The device offers signal-path redundancy for critical data streams.

The MAX3640 has a unique power-saving feature. When a set of four output channels has been de-selected, the output drivers are powered down to reduce power consumption by 165mW. The fully differential architecture ensures low crosstalk, jitter accumulation, and signal skew.

The MAX3640 is available in a 48-pin TQFP package and operates from a +3.3V supply over the 0°C to +85°C temperature range.

Key Features   Applications/Uses
  • Single +3.3V Supply
  • 257mW Power Consumption (four output channels enabled)
  • 2.8psRMS Output Random Jitter
  • 42ps Output Deterministic Jitter
  • Power-Down Feature for Deselected Outputs
  • 110ps Channel-to-Channel Skew
  • 240ps Output Edge Speed
  • LVDS Inputs/Outputs
  • LVDS Output 3-State Enable

 
  • ATM Switch Cores
  • Digital Cross-Connects
  • High-Speed Parallel Links
  • SONET/SDH Backplanes
  • System Interconnects

    Key Specifications:   High-Speed Interconnect (Differential Signaling)
    Part Number Rx Signal Type Tx Signal Type Functions Number of Rx Number of Tx Data Rates (Mbps) Propagation Delay (max) (ps) Supply Voltage (V)
    MAX3640  LVDS LVDS
    Switch
    8 4 622 2500 3.3
    See All High-Speed Interconnect (Differential Signaling) (133)

    Diagram
    MAX3640: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-4800; Rev 0; 2000-05-11
    This page last modified: 2007-06-05



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