MAX4928B:DisplayPort/PCIe Passive Switches

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

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.

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
MAX4928A, MAX4928B: Typical Operating Circuit
MAX4928A, MAX4928B: Typical Operating Circuit
Applications/Uses
  • Desktop PCs
  • Notebook PCs
DataSheet
titleDownload file
MAX4928A-MAX4928B Data SheetMAX4928A-MAX4928B.pdf
Parametrics
Part NumberProtocolConfig.ChannelsVSUPPLY (Single)
(V)
VSUPPLY (Single)
(V)
VSIGNAL
(V)
VSIGNAL
(V)
Dynamic Range (max)
(V)
RFLAT(ON)
(Ω)
RFLAT(ON)
(Ω)
Bandwidth
(MHz)
IL(OFF)
(nA)
tON
(ns)
tOFF
(ns)
Package/PinsBudgetary
Price
minmaxminmaxmaxtypmaxmaxminmaxSee Notes
MAX4928ADP
PCIe
2-to-11233.6-0.11.81.90.31.510000812050TQFN/56$3.64 @1k
MAX4928BTQFN/56
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4928BETN+ActiveTQFN,;56 pin;56.6 mm²-40°C to +85°CLead Free
MAX4928BETN+TActiveTQFN,;56 pin;56.6 mm²-40°C to +85°CLead Free
MAX4928A-MAX4928B.pdf MAX4928B
MAX4928A-MAX4928B_cn.pdf MAX4928B
New Switch Facilitates DisplayPort/PCIe Switching MAX4928B
MAX4928B.pdf MAX4928B
MAX4928A-MAX4928B_cn.pdf MAX4928B