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MAX4998

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Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control

Ultra-Low On-Capacitance and Return Loss to Support Data Rates Greater Than 2.7Gbps

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Overview

  • Single 3.3V Power-Supply Voltage
  • 8.5GHz (typ) Bandwidth
  • Support 1.6/5.4Gbps DisplayPort Signals
    • Handles DisplayPort v1.1 Signals
    • Handles DisplayPort v1.2 Signals
  • Excellent Return Loss -13dB at 2.7GHz
  • Independent High Frequency: AUX Select
  • Designed for AC-Coupled Circuits
  • Pass Throughs Are Maintained
  • Low 850µA (max) Supply Current
  • Small Packages
    • 3.5mm x 5.5mm, 28-Pin TQFN Package with Exposed Pad
    • 3.5mm x 9mm, 42-Pin TQFN Package with Exposed Pad
  • Flow-Through Layout for Easy Board Layout
  • ESD Protection for All I/O Pins: Human Body Model (HBM) ±4kV

The MAX4998/MAX14998 high-speed passive switches route DisplayPort™ between two possible destinations or vice versa in laptop or desktop PCs. The MAX4998/MAX14998 are intended to be used where ultra-high-speed performance and minimal input capacitance is required.

The MAX4998 has three double-pole/double-throw (DPDT) switches and one single-pole/double-throw (SPDT) switch. Two DPDT switches are for high-frequency switching, one DPDT switch is for AUX, and one SPDT switch is for HPD. The two high-frequency switches are selected by SEL1, and the AUX/HPD are selected by SEL2. This part is suitable for two-lane DisplayPort switching.

The MAX14998 has six double-pole/double-throw (DPDT) switches. Four DPDT switches are for high-frequency switching, and two DPDT switches are for AUX and HPD. The four high-frequency switches are selected by SEL1, and the AUX/HPD are selected by SEL2. This part is suitable for four-lane DisplayPort switching.

The MAX4998/MAX14998 are fully specified to operate from a single +3.3V (typ) power supply. The MAX4998 is available in a 3.5mm x 5.5mm, 28-pin TQFN package with exposed pad, and the MAX14998 is available in a 3.5mm x 9mm, 42-pin TQFN package with exposed pad. Both devices operate over the -40°C to +85°C extended temperature range.

Applications

  • Desktop PCs
  • Notebook PCs

MAX4998
Two-Lane and Four-Lane DisplayPort Passive Switches with Separate AUX/HPD Control
MAX14998, MAX4998: Typical Operating Circuit
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Evaluation Kits

MAX14998EVKIT

Evaluation Kit for the MAX14998

Features and Benefits

  • Complete DisplayPort Switch
  • Single 3.3V Power Supply
  • Power LED Indicator
  • DisplayPort Connectors for Source and Sink
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX14998 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that utilizes the MAX14998 IC to route one DisplayPort™ source between two possible destinations, or vice versa.

DisplayPort connectors are provided to easily interface the EV kit with DisplayPort devices. The digital control inputs (SEL1, SEL2) are controlled through a single jumper (JU4) to switch the four-lane plus AUX/HPD DisplayPort. The EV kit requires power from an external 3.3V power supply.

Applications

  • Desktop PCs
  • Notebook PCs

MAX14998EVKIT
Evaluation Kit for the MAX14998

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