TMDS Digital Video Equalizer for HDMI/DVI Cables

Automatic Cable Equalizer for HDMI v1.3 "Deep Color" TMDS Video Signals Up to 2.25Gbps

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The MAX3815A cable equalizer automatically provides compensation for DVI™ and HDMI™ v1.3 cables. It extends the usable cable distance up to 40 meters (1.65Gbps) and 35 meters (2.25Gbps). The MAX3815A is designed to equalize signals encoded in the transition-minimized differential signaling (TMDS®) format.

The MAX3815A 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. Upon LOS, the chip is powered down. 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. The output drive current can also be increased to allow the use of back termination resistors for improved signal integrity. Equalization can be automatic or set to manual control for specific in-cable applications.

The MAX3815A is available in a 7mm x 7mm, 48-pin TQFP-EP package and operates over a 0°C to +70°C temperature range.
MAX3815A: Typical Operating Circuit MAX3815A: Typical Operating Circuit Enlarge+

Key Features

  • Guaranteed Performance to 2.25Gbps (HDMI 1.3), Improved Jitter Performance at Low Source Amplitude, and Enhanced Output Driver
  • Extends 2.25Gbps TMDS Interface Length
    • 0 to 35 Meters Over HDMI Cable, 24 AWG
    • 0 to 22 Meters Over HDMI Cable, 28 AWG
  • Extends 1.65Gbps TMDS Interface Length
    • 0 to 40 Meters Over HDMI Cable, 24 AWG
    • 0 to 28 Meters Over HDMI Cable, 28 AWG
  • Compatible with HDTV Resolutions 720p, 1080i, 1080p, and 1080p with 36-Bit Color
  • Compatible with Computer Resolutions VGA, SVGA, XGA, SXGA, UXGA, and WUXGA
  • Fully Automatic Equalization, No System Control Required
  • 3.3V Power Supply
  • Power Dissipation of 0.6W (typ)
  • 7mm x 7mm, 48-Pin TQFP Lead-Free Package


  • Front-Projector HDMI/DVI Inputs
  • HDMI 1.3 Deep Color Systems
  • HDMI/DVI-D Cable-Extender Modules and Active Cable Assemblies
  • High-Definition Televisions and Displays
  • LCD Computer Monitors

See parametric specs for Digital Video Equalizers/Drivers (4)

Part NumberMax. Reach @ Max. Data RateVSUPPLY
I/O TypeChannelsRx Eq. @ Max. Rate
typSee Notes
35m Cable
50m Cable
$9.43 @1k

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.

See parametric specs for Equalizers (Cable and Circuit Board) (12)

Part NumberPackage/Pins
See Data Sheet

MAX3815AEVKIT: Evaluation Kit for the MAX3815A and MAX3816A
Product Reliability Reports: MAX3815A.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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