ics85408 Integrated Device Technology, ics85408 Datasheet

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ics85408

Manufacturer Part Number
ics85408
Description
Differential Input Lvds Output 1 8 700-mhz Fanout Buffer
Manufacturer
Integrated Device Technology
Datasheet

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G
cept most differential input levels and translates them to 3.3V
LVDS output levels. Utilizing Low Voltage Differential
Signaling (LVDS), the ICS85408 provides a low power, low
noise, low skew, point-to-point solution for distributing LVDS
clock signals.
Guaranteed output and part-to-part skew specifications make
the ICS85408 ideal for those applications demanding well
defined performance and repeatability.
B
85408BG
HiPerClockS™
IC S
LOCK
ENERAL
nCLK
D
CLK
The ICS85408 is a low skew, high performance
1-to-8 Differential-to-LVDS Clock Distribution
Chip and a member of the HiPerClock S ™
family of High Performance Clock Solutions
from ICS. The ICS85408 CLK, nCLK pair can ac-
OE
IAGRAM
D
ESCRIPTION
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
D
IFFERENTIAL
1
F
P
Propagation delay: 2.4ns (maximum)
8 Differential LVDS outputs
CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
Maximum output frequency: 700MHz
Translates any differential input signal (LVPECL, LVHSTL,
SSTL, HCSL) 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
Output skew: 50ps (maximum)
Part-to-part skew: 550ps (maximum)
3.3V operating supply
0°C to 70°C ambient operating temperature
Available in both standard (RoHS5) and lead-free (RoHS 6)
packages
EATURES
IN
A
-
TO
SSIGNMENT
4.4mm x 7.8mm x 0.92mm body package
-LVDS C
24-Lead, 173-MIL TSSOP
nQ6
nQ5
nQ4
nQ3
nQ2
nQ1
Q6
Q5
Q4
Q3
Q2
Q1
ICS85408
G Package
Top View
1
2
3
4
5
6
7
8
9
10
11
12
LOCK
24
23
22
21
20
19
18
17
16
15
14
13
L
D
OW
Q7
nQ7
OE
GND
V
V
GND
V
CLK
nCLK
Q0
nQ0
ISTRIBUTION
DD
DD
DD
ICS85408
S
REV. A DECEMBER 6, 2007
KEW
, 1-
C
TO
HIP
-8

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ics85408 Summary of contents

Page 1

... HiPerClockS™ Chip and a member of the HiPerClock S ™ family of High Performance Clock Solutions from ICS. The ICS85408 CLK, nCLK pair can ac- cept most differential input levels and translates them to 3.3V LVDS output levels. Utilizing Low Voltage Differential Signaling (LVDS), the ICS85408 provides a low power, low noise, low skew, point-to-point solution for distributing LVDS clock signals ...

Page 2

... " ICS85408 KEW - -LVDS LOCK ISTRIBUTION ...

Page 3

... ICS85408 KEW - -LVDS LOCK ISTRIBUTION 70° 0° ...

Page 4

... ICS85408 -LVDS LOCK ISTRIBUTION ...

Page 5

... IFFERENTIAL M EASUREMENT V DD SCOPE Qx nCLK V CLK nQx GND D IFFERENTIAL nQx Qx nQy UTPUT nCLK CLK nQ0:nQ7 Q0:Q7 P ERIOD ROPAGATION 5 ICS85408 KEW -LVDS LOCK ISTRIBUTION I NFORMATION Cross Points NPUT EVEL tsk(o) KEW ELAY REV. A DECEMBER 6, 2007 , HIP ...

Page 6

... LVDS 100 DC Input ➤ out I S ETUP OSD out OSB out I S ETUP OFF 6 ICS85408 KEW -LVDS C D LOCK ISTRIBUTION out out out out LVDS I OFF REV. A DECEMBER 6, 2007 - HIP ➤ ...

Page 7

... IGNAL RIVING put. For a multiple LVDS outputs buffer, if only partial outputs are used recommended to terminate the un-used outputs Ohm R1 100 Ohm LVDS D IGURE YPICAL RIVER 7 ICS85408 KEW -LVDS LOCK ISTRIBUTION = 3.3V, V_REF should be 1.25V DD CLK nCLK I ...

Page 8

... D F 3D. H NPUT RIVEN BY IGURE 3.3V 3. 125 125 CLK nCLK HiPerClockS Input CLK I D NPUT RIVEN OUPLE 8 ICS85408 -LVDS LOCK ISTRIBUTION 3. Ohm CLK Ohm nCLK HiPerClockS LVPECL 3B CLK/ CLK I ...

Page 9

... ABLE VS IR LOW ABLE FOR JA Multi-Layer PCB, JEDEC Standard Test Boards T C RANSISTOR OUNT The transistor count for ICS85408 is: 1821 85408BG D - IFFERENTIAL ELIABILITY NFORMATION 24 L TSSOP EAD by Velocity (Meters per Second 70°C/W 9 ICS85408 KEW -LVDS C ...

Page 10

... ° ICS85408 KEW - -LVDS LOCK ISTRIBUTION ...

Page 11

... " " " ICS85408 KEW - -LVDS LOCK ISTRIBUTION ...

Page 12

... ICS85408 -LVDS LOCK ISTRIBUTION ...

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