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Enhanced VGA Port Protector

Fully Integrated VGA Port Protector Saves Space and Reduces Cost in Portable Applications

Product Details

The MAX14895E integrates level-translating buffers and features RED, GRN, and BLU (RGB) port protection for VGA signals.

The device has horizontal sync (SYNCH_) and vertical synch (SYNCV_) translating buffers that convert low-level CMOS inputs from a graphics controller to meet full 5V, TTL-compatible outputs. Each output can drive ±10mA and meets the VESASM specification. In addition, the device translates the direct digital control (DDC) signals to a lower level that is safe for the graphics controller.

The device features both EN and active-low EN inputs, accepting active-high or active-low enable inputs. The device also switches and current limits the 5V supply to a VGA connector or monitor.

The RED, GRN, and BLU terminals protect graphics controller outputs against electrostatic discharge (ESD) events. All eight outputs and active-low EN have high-level ESD protection.

The MAX14895E is specified over the extended -40°C to +85°C temperature range and is available in a 16-pin, 3mm x 3mm TQFN package with exposed pad.

Key Features

  • Saves Power in Portable Applications
    • Low Quiescent Supply Current: 430µA (typ)
  • Eliminates Need for Costly External Components
    • High-ESD Protection on SDA1, SCL1, SYNCH1, SYNCV1, RED, GRN, BLU, Active-Low EN, VS
    • ±15kV Human Body Model (HBM)
    • ±8kV IEC 61000-4-2 Contact Discharge
  • Innovative Design Enables a High Level of Integration for Performance
    • Output Current-Limit Switch with Power-Off Protection
    • Low Capacitance on RGB Ports (2.2pF typ)
    • ±10mA Drive on SYNCH1, SYNCV1
  • Fully Integrated Solutions Saves Space in Portable Applications
    • DDC Outputs have Internal Pullups
    • 3mm x 3mm, 16-Pin TQFN Package

Applications/Uses

  • Desktops
  • Graphics Cards
  • Notebook Computers
  • Servers
Parametric specs for Switches and Multiplexers (Mid and High Voltage)
Protocol VGA
VSUPPLY (Single) (V) (min) 4.75
VSUPPLY (Single) (V) (max) 5.5
RON (Ω) (max) 55
Package/Pins TQFN/16
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Simplified Block Diagram

MAX14895E: Typical Operating Circuit MAX14895E: Typical Operating Circuit Zoom icon

Technical Docs

Data Sheet Enhanced VGA Port Protector Apr 05, 2011

Design & Development

Click any title below to view the detail page where available.

Description

The MAX14895E evaluation kit (EV kit) provides a proven design to evaluate the MAX14895E IC, which integrates level-translating buffers and features RED, GRN, and BLU (RGB) port protection for VGA signals. In addition, horizontal and vertical synchronization (SYNCH0, SYNCV0) inputs feature level-shifting buffers to support low-voltage CMOS or standard TTL-compatible graphics controllers.

The MAX14895E EV kit comes with the MAX14895EETE+ installed.

View Details

Features

  • Single 5V DC Supply
  • VGA Input and Output Connectors
  • Proven PCB Layout
  • Fully Assembled and Tested

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Support & Training

Search our knowledge base for answers to your technical questions.

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Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for Switches and Multiplexers (Mid and High Voltage)
Protocol VGA
VSUPPLY (Single) (V) (min) 4.75
VSUPPLY (Single) (V) (max) 5.5
RON (Ω) (max) 55
Package/Pins TQFN/16

Key Features

  • Saves Power in Portable Applications
    • Low Quiescent Supply Current: 430µA (typ)
  • Eliminates Need for Costly External Components
    • High-ESD Protection on SDA1, SCL1, SYNCH1, SYNCV1, RED, GRN, BLU, Active-Low EN, VS
    • ±15kV Human Body Model (HBM)
    • ±8kV IEC 61000-4-2 Contact Discharge
  • Innovative Design Enables a High Level of Integration for Performance
    • Output Current-Limit Switch with Power-Off Protection
    • Low Capacitance on RGB Ports (2.2pF typ)
    • ±10mA Drive on SYNCH1, SYNCV1
  • Fully Integrated Solutions Saves Space in Portable Applications
    • DDC Outputs have Internal Pullups
    • 3mm x 3mm, 16-Pin TQFN Package

Applications/Uses

  • Desktops
  • Graphics Cards
  • Notebook Computers
  • Servers

Description

The MAX14895E integrates level-translating buffers and features RED, GRN, and BLU (RGB) port protection for VGA signals.

The device has horizontal sync (SYNCH_) and vertical synch (SYNCV_) translating buffers that convert low-level CMOS inputs from a graphics controller to meet full 5V, TTL-compatible outputs. Each output can drive ±10mA and meets the VESASM specification. In addition, the device translates the direct digital control (DDC) signals to a lower level that is safe for the graphics controller.

The device features both EN and active-low EN inputs, accepting active-high or active-low enable inputs. The device also switches and current limits the 5V supply to a VGA connector or monitor.

The RED, GRN, and BLU terminals protect graphics controller outputs against electrostatic discharge (ESD) events. All eight outputs and active-low EN have high-level ESD protection.

The MAX14895E is specified over the extended -40°C to +85°C temperature range and is available in a 16-pin, 3mm x 3mm TQFN package with exposed pad.

Simplified Block Diagram

MAX14895E: Typical Operating Circuit MAX14895E: Typical Operating Circuit Zoom icon

Technical Docs

Data Sheet Enhanced VGA Port Protector Apr 05, 2011

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal