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MAX3840 fiches techniques PDF

Maxim Integrated - +3.3V / 2.7Gbps Dual 2 . 2 Crosspoint Switch

Numéro de référence MAX3840
Description +3.3V / 2.7Gbps Dual 2 . 2 Crosspoint Switch
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX3840 fiche technique
19-1854; Rev 1; 11/01
+3.3V, 2.7Gbps Dual 2 2 Crosspoint Switch
General Description
The MAX3840 is a dual 2 2 asynchronous crosspoint
switch for SDH/SONET DWDM and other high-speed
data switching applications where serial data stream
loop-through and protection channel switching are
required. It is ideal for OC-48 systems with forward
error correction. A high-bandwidth, fully differential sig-
nal path minimizes jitter accumulation, crosstalk, and
signal skew. Each 2 2 crosspoint switch can fan out
and/or multiplex up to 2.7Gbps data and 2.7GHz clock
signals. All inputs and outputs are current mode logic
(CML) compatible and easily adaptable to interface
with an AC-coupled LVPECL signal. When not used,
each CML output stage can be powered down with an
enable control to conserve power. The typical power
consumption is 460mW with all outputs enabled.
The MAX3840 is compatible with the MAX3876
2.5Gbps clock and data recovery (CDR) circuit.
The MAX3840 is available in a 32-pin exposed-pad
QFN package (5mm 5mm footprint) and operates
from a +3.3V supply over a temperature range of -40°C
to +85°C.
________________________Applications
SDH/SONET and DWDM Transport Systems
Add-Drop Multiplexers
ATM Switch Cores
WDM Cross-Connects
High-Speed Backplanes
Features
o Single +3.3V Supply
o 460mW Power Consumption
o 2psRMS Random Jitter
o 7psP-P Deterministic Jitter
o Power-Down Feature for Deselected Outputs
o CML Inputs/Outputs
o 6ps Channel-to-Channel Skew
o 100ps Output Edge Speed
o 5mm 5mm 32 QFN Package
PART
MAX3840EGJ
Ordering Information
TEMP RANGE PIN-PACKAGE
-40°C TO +85°C 32 QFN
Pin Configuration appears at end of data sheet.
Typical Application Circuit
MAX3866
TIA AND LA
MAX3876
CDR
MAX3866
TIA AND LA
MAX3876
CDR
ZO = 50TRANSMISSION LINE
DATA
VCC = +3.3V
CLOCK
DATA
CLOCK
MAX3840
CROSSPOINT
SWITCH
MAX3869
LASER
DRIVER
MAX3869
LASER
DRIVER
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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