Product Overview

Product Overview
NB7LQ572: Input Mux - 4:1 Differential, 2.5 V / 3.3 V, with Input Equalizer,
Clock / Data Fanout Buffer / Translator, 1:2 LVPECL
For complete documentation, see the data sheet
Product Description
The NB7LQ572 is a high performance differential 4:1 Clock/Data input multiplexer and a 1:2 LVPECL Clock/Data fanout buffer that
operates up to 7GHz/11Gbps respectively with a 2.5V or 3.3V power supply. Each INx/INxb input pair incorporates a fixed Equalizer
Receiver, which when placed in series with a Data path, will enhance the degraded signal transmitted across an FR4 backplane or
cable interconnect. For applications that do not require Equalization, consider the NB7L572, which is pin-compatible to the
NB7LQ572. The differential Clock/Data inputs have internal 50-ohm termination resistors and will accept differential LVPECL, CML,
or LVDS logic levels. The NB7LQ572 incorporates a pair of Select pins that will choose one of four differential inputs and will
produce two identical LVPECL output copies of Clock or Data. As such, the NB7LQ572 is ideal for SONET, GigE, Fiber Channel,
Backplane and other Clock/Data distribution applications. The two differential LVPECL outputs will swing 750mV when externally
loaded and terminated with a 50-ohm resistor to VCC - 2V and are optimized for low skew and minimal jitter. The NB7LQ572 is
offered in a low profile 5mm x 5mm 32-pin QFN Pb-Free package. Application notes, models, and support documentation are
available at www.onsemi.com. The NB7LQ572 is a member of the GigaComm family of high performance clock products.
Features
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Input Data Rate > 11 Gb/s Typical
Data Dependent Jitter < 10 ps
Maximum Input Clock Frequency > 7 GHz Typical
Random Clock Jitter < 0.8 ps RMS
Fixed Input Equalization
Low Skew 1:2 LVPECL Outputs, < 15 ps max
4:1 MultiLevel Mux Inputs, accepts LVPECL, CML LVDS
160ps Typical Propagation Delay
50ps Typical Rise and Fall Times
Differential LVPECL Outputs, 800mV peaktopeak, typical
For more features, see the data sheet
Applications
End Products
• SONET/SDH, Fibre Channel and Gigabit Ethernet Clock/Data
Distribution
• Servers and Routers
Part Electrical Specifications
Product
Compliance
Status
Input/Out Channel
put Ratio s
Input
Level
Output
Level
VCC Typ
(V)
fMax Typ
(MHz)
tJitter Typ
(ps)
tskew(OO)
Max (ps)
tpd Typ
(ns)
Package
Type
NB7LQ572MNG
Pb-free
Active
4:1
ECL
ECL
3.3
7000
0.2
15
160
QFN-32
7000
0.2
15
160
QFN-32
1
Halide free
LVDS
2.5
CML
NB7LQ572MNR4G
Pb-free
Halide free
Active
4:1
1
ECL
CML
ECL
3.3
2.5
LVDS
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016