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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

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • 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

Applications/Uses

  • Desktop PCs
  • Notebook PCs

Description

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.

Simplified Block Diagram

MAX14998, MAX4998: Typical Operating Circuit MAX14998, MAX4998: Typical Operating Circuit Zoom icon

Technical Docs

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 .