MAX3816A

NOT RECOMMENDED FOR NEW DESIGNS

I²C 2-Wire Extender for DDC in DVI, HDMI, and VGA Interfaces

Extend DVI/HDMI Reach Beyond 30m

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • DDC or I²C Cable Extension Up to 60 Meters at 100kbps for Both Clock and Data Channels
  • Single-Sided Solution Requires Only One MAX3816A at the Display Side
  • Compensates for Cable Capacitance, 0 to 3000pF Guaranteed (8x I²C Specification), or Beyond 5000pF Typical
  • Parallel and Serial Operating Modes
  • Prevents Ringing Due to Reflections by Terminating Transmission Line Impedance After Transitions
  • Use with MAX3815 TMDS® Equalizer to Form a Complete Digital Video Extension Solution
  • 3.0V to 5.5V Power Supply
  • Optional Voltage Translation Between 5V Cable DDC and 3.3V Display DDC Levels

The MAX3816A DDC*/I²C extender automatically compensates for excess load capacitance of long DVI™, HDMI™, and VGA cables. A single MAX3816A placed at the display side of the link restores signal integrity bidirectionally for both DDC clock and data over 0 to 60 meters of cable.

The MAX3816A features compensation for cable capacitance with a guaranteed range up to 3000pF, typically beyond 5000pF. The MAX3816A detects state-change assertion by the logical "AND" of the source side and display side. It asserts the new state with a rail-to-rail slew-rate-limited driver capable of meeting I²C rise- and fall-time requirements under the full load of the cable. After assertion of the new state, a holdoff period of 2.5µs prevents a subsequent state change while the cable channel settles.

Under full load at 100kbps, the MAX3816A consumes 25mW, excluding pullup resistors. It is available in a 16-pin TSSOP package and operates from 0°C to +70°C.

Applications

  • DVI/HDMI Cable-Extender Modules and Active Cable Assemblies
  • Front-Projector DVI/HDMI Inputs
  • High-Definition Televisions, Displays, and Computer Monitors
MAX3816A
I²C 2-Wire Extender for DDC in DVI, HDMI, and VGA Interfaces
MAX3816A: Typical Application Circuit (Parallel Mode)
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Documentation

Data Sheet 1

Design Note 1

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Evaluation Kits

MAX3815AEVKIT

Evaluation Kit for the MAX3815A and MAX3816A

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Features and Benefits

  • 2.25Gbps, HDMI 1.3 Deep Color Operation
  • 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
  • +3.3V Power-Supply Operation
  • Includes Wall-Plug Power Supply
  • Molex HDMI Connectors
  • Fully Assembled and Tested

Product Details

The MAX3815A evaluation kit (EV kit) is an assembled demonstration board that allows in-system evaluation of the MAX3815A TMDS® cable equalizer and the MAX3816A DDC extender. The input and output connections are made through Molex HDMI™ connectors for direct connection to HDMI cables.

The DDC signals SDA and SCL are assisted by the MAX3816A. Hot-plug detect, +5V, DDC/CEC ground, and CEC simply pass through the board.

Power is delivered to the board through an external wall-plug transformer, which is included with this EV kit.

Applications

  • 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
MAX3815AEVKIT
Evaluation Kit for the MAX3815A and MAX3816A

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