© Semiconductor Components Industries, LLC, 2012
June, 2012 − Rev. 6
1 Publication Order Number:
NB7L14M/D
NB7L14M
2.5V/3.3V Differential 1:4
Clock/Data Fanout Buffer/
Translator with CML
Outputs and Internal
Termination
Description
The NB7L14M is a differential 1−to−4 clock/data distribution chip
with internal source terminated CML output structures, optimized for
minimal skew and jitter. Device produces four identical output copies
of clock or data operating up to 8 GHz or 12 Gb/s, respectively. As
such, NB7L14M is ideal for SONET, GigE, Fiber Channel, Backplane
and other clock/data distribution applications.
Inputs incorporate internal 50 W termination resistors and accept
LVPECL, CML, LVCMOS, LVTTL, or LVDS (See Table 6).
Differential 16 mA CML outputs provide matching internal 50 W
terminations, and 400 mV output swings when externally terminated
with 50 W to V
CC
(See Figure 14).
The device is offered in a low profile 3x3 mm 16−pin QFN package.
Application notes, models, and support documentation are available at
www.onsemi.com.
Features
• Maximum Input Clock Frequency up to 8 GHz Typical
• Maximum Input Data Rate up to 12 Gb/s Typical
• < 0.5 ps of RMS Clock Jitter
• < 10 ps of Data Dependent Jitter
• 30 ps Typical Rise and Fall Times
• 110 ps Typical Propagation Delay
• 6 ps Typical Within Device Skew
• Operating Range: V
CC
= 2.375 V to 3.465 V with V
EE
= 0 V
• CML Output Level (400 mV Peak−to−Peak Output) Differential
Output Only
• 50 W Internal Input and Output Termination Resistors
• Functionally Compatible with Existing 2.5 V/3.3 V LVEL, LVEP, EP
and SG Devices
• These are Pb−Free Devices
Figure 1. Logic Diagram
50 W
50 W
V
TCLK
CLK
CLK
V
TCLK
Q3
Q3
Q2
Q2
Q1
Q1
Q0
Q0
http://onsemi.com
*For additional marking information, refer to
Application Note AND8002/D.
MARKING
DIAGRAM*
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
QFN−16
MN SUFFIX
CASE 485G
16
NB7L
14M
ALYWG
G
1
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
ORDERING INFORMATION
(Note: Microdot may be in either location)
1
