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DisplayPort/PCIe Passive Switches

The MAX4928A/MAX4928B Route Signals Between a GMCH and Either a PCIe 2.0 Socket or DisplayPort Connector

Product Details

Key Features

Applications/Uses

Parametric specs for Switches and Multiplexers (Low Voltage)
Protocol DP
PCIe
Configuration 2-to-1
# Channels 12
VSUPPLY (Single) (V) (min) 3
VSUPPLY (Single) (V) (max) 3.6
VSIGNAL (V) (min) -0.1
VSIGNAL (V) (max) 1.8
Dynamic Range (max) (V) (max) 1.9
RFLAT(ON) (Ω) (typ) 0.3
Package/Pins TQFN/56
Budgetary
Price (See Notes)
3.82
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Simplified Block Diagram

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Parameters

Parametric specs for Switches and Multiplexers (Low Voltage)
Protocol DP
PCIe
Configuration 2-to-1
# Channels 12
VSUPPLY (Single) (V) (min) 3
VSUPPLY (Single) (V) (max) 3.6
VSIGNAL (V) (min) -0.1
VSIGNAL (V) (max) 1.8
Dynamic Range (max) (V) (max) 1.9
RFLAT(ON) (Ω) (typ) 0.3
Package/Pins TQFN/56
Budgetary
Price (See Notes)
3.82

Key Features

  • Single +3.3V Power Supply Voltage
  • Supports PCIe Gen I, Gen II, and DisplayPort
    • Data Rates > 5Gbps
  • Excellent Return Loss > 12dB at 2.5GHz
  • Six Bidirectional Pairs of Switches
    • All Switching in One Device
  • Low 800µA (max) Supply Current
  • Small 5mm x 11mm, 56-Pin TQFN Package
  • Industry Standard Pinouts

Applications/Uses

  • Desktop PCs
  • Notebook PCs

Description

The MAX4928A/MAX4928B high-speed passive switches route PCI Express® (PCIe) data and/or DisplayPort™ signals between two possible destinations in desktop or laptop PCs. The MAX4928A is intended to be used with the ATX form factor desktop PCs, while the MAX4928B is expected to be used in the BTX form factor.

The MAX4928A/MAX4928B are hex double-pole/double-throw (6 x DPDT) switches. The MAX4928A/MAX4928B feature a single digital control input (SEL) to switch signal paths and a latch input (LE) that holds the switches in a given state.

The MAX4928A/MAX4928B are fully specified to operate from a single +3.3V (typ) power supply. The MAX4928A/MAX4928B are available in an industry standard 5mm x 11mm, 56-pin TQFN package. Both devices operate over the -40°C to +85°C extended temperature range.

Simplified Block Diagram

MAX4928A, MAX4928B: Typical Operating Circuit MAX4928A, MAX4928B: 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 .