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Référence fabricant


NB4N840M Series 3.6V 3.2Gb/s Dual Differential Clock 2x2 Crosspoint SwitchQFN-32

Nom du fabricant: ON Semiconductor
Emballage standard:
Product Variant Information section
Code de date: 1814
Product Specification Section
Caractéristiques techniques
Attributes Table
Type: Differential
Clock Input Frequency - Max: 2.7GHz
Supply Voltage-Nom: 3V to 3.6V
Style d'emballage :  QFN-32
Méthode de montage : Surface Mount
Fonctionnalités et applications

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, Gigabit Ethernet 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 Ω 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 Ω terminations, and 400 mV output swings when externally terminated, 50 Ω 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.

Key Features:

  • Plug−in 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 Peak−to−Peak 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 Peak−to−Peak Output), Differential Output
  • These are Pb−Free Devices


  • OC-3 to OC-48 Line or System Loopback
  • Redundant Data Fan-out
Pricing Section
Commande minimale :
Multiples de :
Sur commande :
Stock d'usine :Stock d'usine :
3 552
Délai d'usine :
4 Semaines
14,44 $
Prix Internet
Product Variant Information section