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MAX4928A

MAX4928A

DisplayPort/PCIe Passive Switches

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

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Overview

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

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

Parametric Specs

Part NumberProtocolConfig.ChannelsVSUPPLY (Single)
(V)		VSUPPLY (Single)
(V)		VSIGNAL
(V)		VSIGNAL
(V)		Dynamic Range (max)
(V)		RFLAT(ON)
(Ω)		Bandwidth
(MHz)		IL(OFF)
(nA)		tON
(ns)		tOFF
(ns)		Package/PinsBudgetary
Price
minmaxminmaxmaxtypmaxmaxmaxSee Notes
MAX4928A 
DP
PCIe
2-to-11233.6-0.11.81.90.310000812050
TQFN/56
$3.82 @1k
MAX4928B 
TQFN/56
See All Switches and Multiplexers (Low Voltage) (163)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

Technical Documents

App Note 5299 Selecting the Right CMOS Analog Switch
App Note 4446 How to Switch the DisplayPort Hot-Plug-Detect Signal with the MAX4928
App Note 4191 New Switch Facilitates DisplayPort/PCIe Switching

Quality and Environmental Data

Product Reliability Reports: MAX4928A.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Environmental Management System >

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Related Resources

Technical Docs