Data Sheet Rev. 1

Overview

Features and Benefits

  • Design Flexibility
    • Graphics Controller Port is Protected when VCC = 0V
    • DDC Switches Limit Voltage to Low-Voltage Supply
    • Internal +2.5V Regulator
  • High Level of Integration for Enhanced Performance
    • Low 5.5pF (typ) RGB Capacitance
    • 2.0ns (typ) tR/tF with 10pF, 2.2kΩ Load on Monitor-Side SYNC Signals
    • Source and Sink 8mA While Meeting Speed Requirements
    • ±11kV Human Body Model (HBM)
  • Saves Space on Board
    • Internal Power Switches
      • Pass +5V with 300mV (max) IR Drop
      • Short-Circuit/Thermal/Reverse-Current Protection
    • 5mm x 5mm, 32-Pin TQFN Package

Product Details

The MAX14983E integrates high-bandwidth analog switches, level-translating buffers, and 5V power switches to implement a complete 1:2 multiplexer for VGA monitors. The device switches graphics signals between a controller and two outputs. Integrated pullup resistors (2.2kΩ typ) are provided on the monitor-side display data channel (DDC) signal lines.

The device features a simple power interface that operates with a single +5V supply input. Two integrated power switches with current limiting and reverse-current protection pass the +5V supply to external loads with minimal voltage drop.

The horizontal and vertical synchronization (HSYNC/VSYNC) buffers shift logic levels to support +2.5V to +5.0V CMOS or TTL-compatible graphics controllers while meeting the VESA drive capability requirement of ±8mA. An internal 2.5V regulator translates the DDC voltage levels to be compatible with low-voltage graphics controllers.

The device also features monitor-detect outputs and enable inputs that allow monitor switching to operate either automatically or with inputs from the graphics controller. The MAX14983E is available in a 32-pin (5mm x 5mm) TQFN package, and is specified over the -40°C to +85°C extended temperature range.

Applications

  • Computing
  • Graphics Cards
  • KVM Switches
  • Servers

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