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8714008DKILF

Description
clock generators & support products Femtoclock
Categorysemiconductor    Other integrated circuit (IC)   
File Size445KB,34 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Environmental Compliance  
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8714008DKILF Overview

clock generators & support products Femtoclock

FemtoClock
®
Zero Delay Buffer/ Clock
Generator for PCI Express™ and Ethernet
General Description
The ICS8714008I is Zero-Delay Buffer/Frequency Multiplier with
eight differential HCSL output pairs, and uses external feedback
(differential feedback input and output pairs) for “zero delay” clock
regeneration. In PCI Express and Ethernet applications, 100MHz
and 125MHz are the most commonly used reference clock
frequencies and each of the eight output pairs can be independently
set for either 100MHz or 125MHz. With an output frequency range of
98MHz to 165MHz, the device is also suitable for use in a variety of
other applications such as Fibre Channel (106.25MHz) and XAUI
(156.25MHz). The M-LVDS Input/Output pair is useful in backplane
applications when the reference clock can either be local (on the
same board as the ICS8714008I) or remote via a backplane
connector. In output mode, an input from a local reference clock
applied to the CLK, nCLK input pins is translated to M-LVDS and
driven out to the MLVDS, nMLVDS pins. In input mode, the internal
M-LVDS driver is placed in High-impedance state using the
OE_MLVDS pin and MLVDS, nMLVDS pin then becomes an input
(e.g. from a backplane).
The ICS8714008I uses very low phase noise FemtoClock
technology, thus making it ideal for such applications as PCI Express
Generation 1, 2 and 3 as well as for Gigabit Ethernet, Fibre Channel,
and 10 Gigabit Ethernet. It is packaged in a 56-VFQFN package
(8mm x 8mm).
ICS8714008I
DATASHEET
Features
Eight 0.7V differential HCSL output pairs, individually selectable
for 100MHz or 125MHz for PCIe and Ethernet applications
One differential clock input pair CLK, nCLK can accept the
following differential input levels: LVPECL, LVDS, M-LVDS,
LVHSTL, HCSL
One M-LVDS I/O pair (MLVDS, nMLVDS)
Output frequency range: 98MHz - 165MHz
Input frequency range: 19.6MHz - 165MHz
VCO range: 490MHz - 660MHz
PCI Express (2.5 Gb/s), Gen 2 (5 Gb/s), and Gen 3 (8 Gb/s)
jitter compliant
External feedback for “zero delay” clock regeneration
RMS phase jitter @ 125MHz (1.875MHz – 20MHz):
0.59ps (typical)
Full 3.3V supply mode
-40°C to 85°C ambient operating temperature
Lead-free (RoHs 6) packaging
Pin Assignment
PDIV0
nCLK
CLK
V
DDA
QDIV4
QDIV5
QDIV6
QDIV7
Q0
nQ0
V
DD
Q1
PDIV1
nQ1
56 55 54 53 52 51 50 49 48 47 46 45 44 43
V
DD
OE_MLVDS
MLVDS
nMLVDS
GND
PLL_SEL
V
DD
nc
FBO_DIV
MR
OE0
OE1
OE2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
FBI_DIV0
42
41
40
39
38
37
36
35
34
33
32
31
30
29
17 18
nFBIN
FBIN
V
DD
Q2
nQ2
Q3
nQ3
V
DD
Q4
nQ4
Q5
nQ5
FBOUT
nFBOUT
V
DD
IREF
21
QDIV0
QDIV1
24 25
Q7
nQ7
27 28
Q6
nQ6
ICS8714008I
56-Lead VFQFN
8mm x 8mm x 0.925mm package body
4.5mm x 5.2mm ePad size
K Package
Top View
ICS8714008DKI REVISION A NOVEMBER 25, 2013
1
©2013 Integrated Device Technology, Inc.
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