NB7VQ14M Datasheet, PDF (1/10 Pages) ON Semiconductor – Multi−Level Inputs Internal Termination

NB7VQ14M
1.8V/2.5V/3.3V 8GHz /
14Gbps Differential 1:4
Clock / Data CML Fanout
Buffer w/ Selectable Input
Equalizer
Multi−Level Inputs w/ Internal Termination
Description
The NB7VQ14M is a high performance differential 1:4 CML fanout
buffer with a selectable Equalizer receiver. When placed in series with
a Clock /Data path operating up to 8 GHz or 14 Gb/s, respectively, the
NB7VQ14M inputs will compensate the degraded signal transmitted
across a FR4 PCB backplane or cable interconnect and output four
identical CML copies of the input signal with a 1.8 V, 2.5 V or 3.3 V
power supply. Therefore, the serial data rate is increased by reducing
Inter−Symbol Interference (ISI) caused by losses in copper
interconnect or long cables. The EQualizer ENable pin (EQEN)
allows the IN/IN inputs to either flow through or bypass the Equalizer
section. Control of the Equalizer function is realized by setting EQEN;
When EQEN is set Low, the IN/IN inputs bypass the Equalizer. When
EQEN is set High, the IN/IN inputs flow through the Equalizer. The
default state at start−up is LOW. As such, NB7VQ14M is ideal for
SONET, GigE, Fiber Channel, Backplane and other Clock/Data
distribution applications.
The differential inputs incorporate internal 50 W termination
resistors that are accessed through the VT pin. This feature allows the
NB7VQ14M to accept various logic level standards, such as LVPECL,
CML or LVDS. The 1:4 fanout design was optimized for low output
skew applications.
The NB7VQ14M is a member of the GigaComm™ family of high
performance clock products.
Features
• Input Data Rate > 14 Gb/s, Typical
• Input Clock Frequency > 8 GHz, Typical
• 165 ps Typical Propagation Delay
• 30 ps Typical Rise and Fall Times
• < 15 ps Maximum Output Skew
• < 0.8 ps Maximum RMS Clock Jitter
• < 10 ps pp of Data Dependent Jitter
• Differential CML Outputs, 400 mV Peak−to−Peak, Typical
• Selectable Input Equalization
• Operating Range: V_CC = 1.71 V to 3.6 V with GND = 0 V
• Internal Input Termination Resistors, 50 W
• −40°C to +85°C Ambient Operating Temperature
• These are Pb−Free Devices
http://onsemi.com
1
QFN−16
MN SUFFIX
CASE 485G
MARKING
DIAGRAM*
16
1
NB7V
Q14M
ALYWG
G
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
*For additional marking information, refer to
Application Note AND8002/D.
SIMPLIFIED BLOCK DIAGRAM
EQ
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
1
December, 2010 − Rev. 0
Publication Order Number:
NB7VQ14M/D