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NB3L208K fiches techniques PDF

ON Semiconductor - 2.5V / 3.3V Differential 1:8 HCSL Fanout Buffer

Numéro de référence NB3L208K
Description 2.5V / 3.3V Differential 1:8 HCSL Fanout Buffer
Fabricant ON Semiconductor 
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NB3L208K fiche technique
NB3L208K
2.5V, 3.3V Differential 1:8
HCSL Fanout Buffer
Description
The NB3L208K is a differential 1:8 Clock fanout buffer with
High−speed Current Steering Logic (HCSL) outputs. Inputs can
directly accept differential LVPECL, LVDS, and HCSL signals.
Single−ended LVPECL, HCSL, LVCMOS, or LVTTL levels are
accepted with a proper external Vth reference supply per Figures 4
and 6. The input signal will be translated to HCSL and provides eight
identical copies operating up to 350 MHz.
The NB3L208K is optimized for ultra−low phase noise, propagation
delay variation and low output–to–output skew, and is DB800H
compliant. As such, system designers can take advantage of the
NB3L208K’s performance to distribute low skew clocks across the
backplane or the motherboard making it ideal for Clock and Data
distribution applications such as PCI Express, FBDIMM, Networking,
Mobile Computing, Gigabit Ethernet, etc.
Output drive current is set by connecting a 475 W resistor from
IREF (Pin 27) to GND per Figure 11. Outputs can also interface to
LVDS receivers when terminated per Figure 12.
Features
Maximum Input Clock Frequency > 350 MHz
2.5 V ±5% / 3.3 V ±10% Supply Voltage Operation
8 HCSL Outputs
DB800H Compliant
Individual OE Control Pin for Each Bank of 2 Outputs
100 ps Max Output−to−Output Skew Performance
1 ns Typical Propagation Delay
500 ps Typical Rise and Fall Times
80 fs Maximum Additive Phase Jitter RMS
−40°C to +85°C Ambient Operating Temperature
QFN 32−pin Package, 5 mm x 5 mm
These Devices are Pb−Free and are RoHS Compliant
Typical Applications
PCI Express
FBDIMM
Mobile Computing
Networking
Gigabit Ethernet
www.onsemi.com
MARKING
DIAGRAM
1 32
QFN32
G SUFFIX
CASE 488AM
1
NB3L
208K
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information page 12 of this
data sheet.
© Semiconductor Components Industries, LLC, 2014
December, 2014 − Rev. 1
1
Publication Order Number:
NB3L208K/D

PagesPages 13
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