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NB4N840M: 2 x 2 Crosspoint Switch, Dual, 3.3 V, 3.2 Gb / s, with CML Outputs

Datasheet: 2 x 2 Crosspoint Switch, Dual, 3.3 V, 3.2 Gb / s, with CML Outputs
Rev. 5 (102kB)
Product Overview
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» Product Change Notification
The NB4N840M is a high−bandwidth fully differential dual 2 x 2 crosspoint switch with CML inputs/outputs that is suitable for applications such as SDH/SONET DWDM and high speed switching. Fully differential design techniques are used to minimize jitter accumulation, crosstalk, and signal skew, which make this device ideal for loop−through and protection channel switching applications.
Internally terminated differential CML inputs accept AC−coupled LVPECL (Positive ECL) or direct coupled CML signals. By providing internal 50 Ohm input and output termination resistor, the need for external components is eliminated and interface reflections are minimized. Differential 16 mA CML outputs provide matching internal 50 Ohm terminations, and 400 mV output swings when externally terminated, 50 Ohm to VCC.
Single−ended LVCMOS/LVTTL SEL inputs control the routing of the signals through the crosspoint switch which makes this device configurable as 1:2 fan−out, repeater or 2 x 2 crosspoint switch. The device is housed in a low profile 5 x 5 mm 32−pin QFN package.
Features
 
  • Plugin compatible to the MAX3840 and SY55859L
  • Maximum Input Clock Frequency 2.7 GHz
  • Maximum Input Data Frequency 3.2 Gb/s
  • 225 ps Typical Propagation Delay
  • 80 ps Typical Rise and Fall Times
  • 7 ps Channel to Channel Skew
  • 430 mW Power Consumption
  • < 0.5 ps RMS Jitter
  • 7 ps PeaktoPeak Data Dependent Jitter
  • Power Saving Feature with Disabled Outputs
  • Operating Range: VCC = 3.0 V to 3.6 V with VEE = 0 V
  • CML Output Level (400 mV PeaktoPeak Output), Differential Output
  • These are Pb-Free Devices
Applications
  • OC-3 to OC-48 Line or System Loopback
  • Redundant Data Fan-out
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NB4N840MMNEVB Active
Dual 2x2 Crosspoint Switch Evaluation Board
Availability & Samples
Specifications
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NB4N840MMNG Active
Pb-free
Halide free
NB4N840M QFN-32 488AM 1 260 Tube 74 Contact Sales Office
NB4N840MMNR4G Active
Pb-free
Halide free
NB4N840M QFN-32 488AM 1 260 Tape and Reel 1000 Contact Sales Office
NB4N840MMNTWG Active
Pb-free
Halide free
NB4N840M QFN-32 488AM 1 260 Tape and Reel 1000 Contact Sales Office
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 5,000
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Input/Output Ratio
Channels
Input Level
Output Level
VCC Typ (V)
fMax Typ (MHz)
tJitter Typ (ps)
tskew(OO) Max (ps)
tpd Typ (ns)
Package Type
NB4N840MMNG  
Pb
H
 Active   
2:1
2
CML
CML
2.5
3200
0.15
25
0.225
QFN-32
NB4N840MMNR4G  
Pb
H
 Active   
2:1
2
CML
CML
2.5
3200
0.15
25
0.225
QFN-32
NB4N840MMNTWG  
Pb
H
 Active   
2:1
2
CML
CML
2.5
3200
0.15
25
0.225
QFN-32
Case Outlines
488AM   
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