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PDF MAX4888B Data sheet ( Hoja de datos )
| Número de pieza | MAX4888B | |
| Descripción | Up to 8.0Gbps Dual Passive Switches | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-5706; Rev 0; 12/10
EVAALVUAAILTAIOBNLEKIT
Up to 8.0Gbps Dual Passive Switches
General Description
The MAX4888B/MAX4888C dual double-pole/double-
throw (2 x DPDT), high-speed passive switches are
ideal for switching two half-lanes of PCI ExpressM (PCIe)
data between two possible destinations. These devices
feature a dual digital control input to switch signal paths.
The MAX4888C is intended for use in systems where
both the input and output are capacitively coupled (e.g.,
SAS, SATA, XAUI, and PCIe) and provides a 10FA (typ)
source current and a 60kI (typ) internal biasing resistor
to GND at the AOUT_ and BOUT_ pins.
The devices are fully specified to operate from a single
+3.3V (typ) power supply. Both devices are available
in an industry-standard 3.5mm x 5.5mm, 28-pin TQFN
package. They operate over the -40NC to +85NC extend-
ed temperature range.
Desktop PCs
Notebook PCs
Servers
Applications
Features
S Single +3.3V Power-Supply Voltage
S Supports PCIe Gen I, Gen II, and Gen III Data
Rates
S Supports Up To and Including 6.0Gbps SAS/SATA
Signals
S Supports Other High-Speed Interfaces (e.g., XAUI)
S Superior Bandwidth Return Loss
S Small, 3.5mm x 5.5mm, 28-Pin TQFN Package
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX4888BETI+ -40NC to +85NC 28 TQFN-EP*
MAX4888CETI+ -40NC to +85NC 28 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Typical Operating Circuit
CONNECTION SELECT
VCC VCC
PCIe HOST
SAS HOST
AOUTA+
AOUTA-
BOUTA+
BOUTA-
MAX4888C
AOUTB+
AOUTB-
BOUTB+
BOUTB-
GND
SEL
SELB
AIN+
AIN-
BIN+
BIN-
NOTE: CAPACITIVE COUPLING WAS OMITTED TO SIMPLIFY ILLUSTRATION.
SEL AOUTA+
AOUTA-
SELB BOUTA+
BOUTA-
AIN+
AIN- MAX4888C
BIN+
BIN- AOUTB+
AOUTB-
BOUTB+
BOUTB-
GND
PCIe DEVICE
SAS DEVICE
PCI Express is a registered trademark of PCI-SIG Corp.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
Up to 8.0Gbps Dual Passive Switches
Test Circuits/Timing Diagrams (continued)
SOURCE
ZS
VS+ Σ
ZS
VS- Σ
MAX4888B
MAX4888C
SEL
ZS
VSC+ Σ
ZS
VSC- Σ
CALIBRATION
TRACES
LOAD
VOUTp
VOUTn
ZL
ZL
VCALp
VCALn
ZL
ZL
VCALp - VCALn
50%
50%
VOUTp - VOUTn
50%
tPDr
tPDf
50%
tPD = max (tPDr, tPDf)
VOUTp
VCM
VCM
VOUTn
VCM
tSK1
AFTER ELIMINATING SOURCE AND CABLE SKEWS.
Figure 2. Propagation Delay and Output Skew
tSK2
VCM
tSKEW = max (tSK1, tSK2)
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet MAX4888B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX4888 | 2.5Gbps PCI Express Passive Switches | Maxim Integrated |
| MAX4888A | 5.0Gbps PCI Express Passive Switches | Maxim Integrated |
| MAX4888B | Up to 8.0Gbps Dual Passive Switches | Maxim Integrated |
| MAX4888C | Up to 8.0Gbps Dual Passive Switches | Maxim Integrated |
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