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8304AMI
www.icst.com/products/hiperclocks.html
REV. B APRIL 4, 2002
1
Integrated
Circuit
Systems, Inc.
ICS8304I
L
OW
S
KEW
, 1-
TO
-4
LVCMOS / LVTTL F
ANOUT
B
UFFER
G
ENERAL
D
ESCRIPTION
The ICS8304 I is a low skew, 1-to-4 Fanout
Buffer and a member of the HiPerClockSTM
family of High Performance Clock Solutions
from ICS. The ICS8304I is characterized at
full 3.3V for input V
DD
, and mixed 3.3V and
2.5V for output operating supply modes (V
DDO
). Guaran-
teed output and part-to-part skew characteristics make
t h e I C S 8 3 0 4 I i d e a l f o r t h o s e c l o c k d i s t r i b u t i o n
applications demanding well defined performance and
repeatability.
F
EATURES
4 LVCMOS / LVTTL outputs
LVCMOS clock input
CLK can accept the following input levels: LVCMOS, LVTTL
Maximum output frequency: 166MHz
Output skew: 60ps (maximum)
Part-to-part skew: 650ps (maximum)
Small 8 lead SOIC package saves board space
3.3V input, outputs may be either 3.3V or 2.5V supply modes
-40C to 85C ambient operating temperature
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
ICS8304I
8-Lead SOIC
3.8mm x 4.8mm, x 1.47mm package body
M Package
Top View
V
DDO
V
DD
CLK
GND
1
2
3
4
Q0
Q1
Q2
Q3
CLK
HiPerClockSTM
,&6
Q3
Q2
Q1
Q0
8
7
6
5
8304AMI
www.icst.com/products/hiperclocks.html
REV. B APRIL 4, 2002
2
Integrated
Circuit
Systems, Inc.
ICS8304I
L
OW
S
KEW
, 1-
TO
-4
LVCMOS / LVTTL F
ANOUT
B
UFFER
T
ABLE
1. P
IN
D
ESCRIPTIONS
T
ABLE
2. P
IN
C
HARACTERISTICS
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8304AMI
www.icst.com/products/hiperclocks.html
REV. B APRIL 4, 2002
3
Integrated
Circuit
Systems, Inc.
ICS8304I
L
OW
S
KEW
, 1-
TO
-4
LVCMOS / LVTTL F
ANOUT
B
UFFER
A
BSOLUTE
M
AXIMUM
R
ATINGS
Supply Voltage, V
DDx
4.6V
Inputs, V
I
-0.5V to V
DD
+ 0.5V
Outputs, V
O
-0.5V to V
DDO
+ 0.5V
Package Thermal Impedance,
JA
112.7C/W (0 lfpm)
Storage Temperature, T
STG
-65C to 150C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings
are stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in the
DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended peri-
ods may affect product reliability.
T
ABLE
3A. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
DD
= V
DDO
= 3.3V5%, T
A
= -40C
TO
85C
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8304AMI
www.icst.com/products/hiperclocks.html
REV. B APRIL 4, 2002
4
Integrated
Circuit
Systems, Inc.
ICS8304I
L
OW
S
KEW
, 1-
TO
-4
LVCMOS / LVTTL F
ANOUT
B
UFFER
T
ABLE
3C. P
OWER
S
UPPLY
DC C
HARACTERISTICS
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DD
= 3.3V5%, V
DDO
= 2.5V5%, T
A
= -40C
TO
85C
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www.icst.com/products/hiperclocks.html
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5
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4B. AC C
HARACTERISTICS
,
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A
= -40C
TO
85C