Integrated
Circuit
Systems, Inc.
ICS8516
L
OW
S
KEW
, 1-
TO
-16
D
IFFERENTIAL
-
TO
-LVDS C
LOCK
D
ISTRIBUTION
C
HIP
F
EATURES
•
Sixteen
differential
LVDS outputs
•
CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL
•
Maximum output frequency: 700MHz
•
Translates any differential input signal (LVPECL, LVHSTL,
SSTL, DCM) to LVDS levels without external bias networks
•
Translates any single-ended input signal to LVDS
with resistor bias on nCLK input
•
Multiple output enable inputs for disabling unused
outputs in reduced fanout applications
•
LVDS compatible
•
Output skew: 90ps (maximum)
•
Part-to-part skew: 500ps (maximum)
•
Propagation delay: 2.4ns (maximum)
•
Additive phase jitter, RMS: 148fs (typical)
•
3.3V operating supply
•
0°C to 70°C ambient operating temperature
•
Available in both standard and lead-free RoHS compliant
packages
G
ENERAL
D
ESCRIPTION
The ICS8516 is a low skew, high performance
1-to-16 Differential-to-LVDS Clock Distribution
HiPerClockS™
Chip and a member of the HiPerClock S ™
family of High Performance Clock Solutions from
ICS. The ICS8516 CLK, nCLK pair can accept
any differential input levels and translates them to 3.3V LVDS
output levels. Utilizing Low Voltage Differential Signaling
(LVDS), the ICS8516 provides a low power, low noise, point-
to-point solution for distributing clock signals over controlled
impedances of 100Ω.
IC
S
Dual output enable inputs allow the ICS8516 to be used in a
1-to-16 or 1-to-8 input/output mode.
Guaranteed output and part-to-part skew specifications make
the ICS8516 ideal for those applications demanding well
defined performance and repeatability.
B
LOCK
D
IAGRAM
CLK
nCLK
P
IN
A
SSIGNMENT
48 47 46 45 44 43 42 41 40 39 38 37
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
9
28
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
Q9
nQ9
Q8
nQ8
GND
OE2
OE1
GND
nQ7
Q7
nQ6
Q6
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
Q15
nQ15
Q14
nQ14
Q13
nQ13
Q12
nQ12
Q11
nQ11
Q10
nQ10
Q9
nQ9
Q8
nQ8
V
DD
nQ5
Q5
nQ4
Q4
V
DD
GND
nQ3
Q3
nQ2
Q2
V
DD
ICS8516
V
DD
nQ10
Q10
nQ11
Q11
V
DD
GND
nQ12
Q12
nQ13
Q13
V
DD
OE1
OE2
8516FY
48-Lead LQFP
7mm x 7mm x 1.4mm body package
Y Package
Top View
www.icst.com/products/hiperclocks.html
1
nQ14
Q14
nQ15
Q15
GND
CLK
nCLK
GND
Q0
nQ0
Q1
nQ1
REV. B FEBRUARY 21, 2006
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
