12.5Gbps, CML, 2 x 2 Crosspoint Switch

Low-Power, 12.5Gbps, CML, 2 x 2 Crosspoint Switch IC

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The MAX3841 is a low-power, 12.5Gbps, 2 x 2 crosspoint switch IC for high-speed serial data loopback, redundancy, and switching applications. The MAX3841 current-mode logic (CML) inputs and outputs have isolated VCC connections to enable DC-coupled interfaces to 1.8V, 2.5V, or 3.3V CML ICs. Fully differential signal paths and Maxim's second-generation SiGe technology provide optimum signal integrity, minimizing jitter, crosstalk, and signal skew. The MAX3841 is ideal for serial OC-192 and 10GbE optical module, line card, switch fabric, and similar applications.

The MAX3841 has 150mVP-P minimum differential input sensitivity and 500mVP-P nominal differential output swing. Unused outputs can be powered down individually to conserve power. In addition to functioning as a 2 x 2 switch, the MAX3841 can be configured as a 2:1 multiplexer, 1:2 buffer, or dual 1:1 buffer. The MAX3841 is available in a 4mm x 4mm 24-pin thin QFN package, and consumes only 215mW with both outputs enabled.
MAX3841: Typical Application Circuit MAX3841: Typical Application Circuit Enlarge+

Key Features

  • Up to 12.5Gbps Operation
  • Less Than 10psP-P Deterministic Jitter
  • Less Than 0.7psRMS Random Jitter
  • 1.8V, 2.5V, and 3.3V DC-Coupled CML I/O
  • Independent Output Power-Down
  • 4mm x 4mm Thin QFN Package
  • -40°C to +85°C Operation
  • +3.3V Core Supply
  • 215mW Power Consumption (Excluding Termination Currents)


  • Clock Fanout
  • OC-192, 10GbE Optical Modules
  • OC-192, 10GbE Switch/Line Cards
  • System Redundancy/Self Test
Part NumberSignal TypeSignal TypeFunctionsRxTxData Rates
Propagation Delay
RxTxmaxSee Notes
MAX3841 CMLCMLSwitch22125001403.3
$19.39 @1k
See All High-Speed Interconnect (Differential Signaling) (125)
Pricing 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX3841EVKIT: Evaluation Kit for the MAX3841

Quality and Environmental Data

Product Reliability Reports: MAX3841.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


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