TMDS Digital Video Equalizer for DVI/HDMI Cables

Cable Equalizer IC Extends DVI/HDMI Reach Beyond 30m

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The MAX3815 cable equalizer automatically provides compensation for DVI™, HDMI™, DFP, PanelLink®, and ADC cables. It extends the usable cable distance up to 36 meters. The MAX3815 is designed to equalize signals encoded in the transition-minimized differential signaling (TMDS®) format.

The MAX3815 features four CML-differential inputs and outputs (three data and one clock). It provides a loss-of-signal (LOS) output that indicates loss-of-clock signal. The outputs include a disable function or the equalizer can be powered down to conserve power. For direct chip-to-chip communication, the output drivers can be switched to one-half the DVI output specification to conserve power and reduce EMI. Equalization can be automatic or set to manual control for specific in-cable applications.

The MAX3815 is available in a 7mm x 7mm, 48-pin TQFP-EP package and operates over a 0°C to +70°C temperature range.

MAX3815: Functional Diagram MAX3815: Functional Diagram Enlarge+

Key Features

  • Extends TMDS Cable Reach to Projectors or Monitors Using DVI, DFP, PanelLink, ADC, or HDMI Interfaces
  • Extends TMDS Interface Length as Follows:
    • 0 to 50 Meters Over DVI-Cable, 24 AWG STP (Shielded-Twisted Pair)
    • 0 to 36 Meters Over DVI-Cable, 28 AWG STP
    • 0 to 30 Meters Over DVI-Cable, 30 AWG STP
  • Compatible with DTV Resolutions 480i, 480p, 720p, 1080i, and 1080p
  • Compatible with Computer Resolutions VGA, SVGA, XGA, SXGA, UXGA
  • Fully Automatic Equalization Up to 40dB at 825MHz (1.65Gbps), No System Control Required
  • 3.3V Power Supply
  • Power Dissipation of 0.6W (typ)
  • 7mm x 7mm 48-Pin TQFP Lead-Free Package


  • DVI/HDMI Cable-Extender Modules and Active Cable Assemblies
  • Front-Projector DVI/HDMI Inputs
  • High-Definition Televisions and Displays
  • LCD Computer Monitors
Part NumberData Rate
Max. Reach @ Max. Data RateVSUPPLY
I/O TypeChannelsRx Eq. @ Max. Rate
maxtyptypSee Notes
MAX3815 165050m Cable3.3165CML140
$7.58 @1k
See All Digital Video Equalizers/Drivers (4)
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.

Part NumberPackage/Pins
See Data Sheet
See All Equalizers (Cable and Circuit Board) (13)

MAX3815EVKIT-HDMI: MAX3815 Evaluation Kit for HDMI Cables
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.

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