MAX14984

PRODUCTION

Enhanced VGA Port Protector with Monitor Detection and Dual USB Power Switches

Seamlessly Switch Between Monitors While Powering USB Ports

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $3.48

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Overview

Design Flexibility
- Graphics Controller Port Is Protected when V_CC = 0V
- External Pullup Resistors Match DDC Channel to Graphics Controller Supply
- Up to Two USB Ports Supported
High Level of Integration for Performance
- S5V Provides +5V at 55mA to VGA Port
- Internal Pullup Resistors on DDC Outputs to S5V
- Low 6pF (typ) RGB Capacitance
- 2.1ns (typ) t_R/t_F with 10pF, 2.2kΩ Load on Monitor-Side SYNC Signals
- Source and Sink 8mA While Meeting Speed Requirements
- High-ESD Protection on VGA and USB Outputs
  - ±8kV Human Body Model (HBM)
Saves Space on Board
- Internal USB Switches
  - Pass +5V at 500mA with 250mV (max) IR Drop
  - Current Limited/Thermal Protection
- 4mm x 4mm, 24-Pin TQFN Package

The MAX14984 is a complete VGA port protector with dual USB power switches. The device features all the circuitry required to detect the insertion and removal of a monitor and automatically connect the graphics controller when a monitor is detected. A switched 5V output provides up to 55mA to the VGA port in addition to normal VGA signals.

The MAX14984 features a single active-low enable input to control two 5V USB switches. Each switch supplies 500mA of current with less than 250mV drop from V_CC, and is protected against short-circuit faults. Two active-low fault outputs indicate when a fault condition is detected on either output.

High-bandwidth analog switches exceed VESA rise/fall time requirements for the RGB channels. The horizontal and vertical synchronization (H/V) 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 and pullup resistors on the monitor side translate the DDC voltage levels to be compatible with low-voltage graphics controllers.

The MAX14984 features high-ESD protection of ±8kV Human Body Model (HBM) on all VGA and USB outputs. The device is available in a 24-pin (4mm x 4mm) TQFN package and is specified over the -40°C to +85°C extended temperature range.

Applications

Desktop PCs
Servers
Workstations

Part Models: 2
1ku List Price: Starting From $3.48

Documentation

Data Sheet 1

MAX14984: Enhanced VGA Port Protector with Monitor Detection and Dual USB Power Switches Data Sheet (Rev.0) 03/19/2012

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX14984ETG+	24-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14984ETG+T	24-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX14984

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Features and Benefits

VGA Input and Output Connectors
Enable Inputs
Monitor Detection Output
Fault Outputs
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX14984 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that evaluates the MAX14984 VGA port protector and dual USB power switches IC.

The EV kit provides jumpers and LEDs to evaluate the device’s two enable inputs, monitor detection output, and two fault outputs. VGA input and output connectors are provided to easily interface the EV kit with VGA-compatible devices.

Applications