Integrated
Circuit
Systems, Inc.
83904AG-02
www.icst.com/products/hiperclocks.html
REV. A JULY 8, 2005
1
ICS83904-02
L
OW
S
KEW
, 1-
TO
-4
C
RYSTAL
-
TO
-LVCMOS/LVTTL F
ANOUT
B
UFFER
PRELIMINARY
F
EATURES
Four LVCMOS/LVTTL outputs,
19
typical output impedance
Two Crystal oscillator input pairs
One LVCMOS/LVTTL clock input
Crystal input frequencry range: 10MHz - 40MHz
Output frequency: 200MHz (typical)
Output Skew: TBD
Part to Part Skew: TBD
RMS phase jitter @ 25MHz output, using a 25MHz crystal
(100Hz - 1MHz): 0.16ps (typical) @ V
DD
= V
DDO
= 3.3V
RMS phase noise at 25MHz:
Offset
Noise Power
100Hz .............. -118.4 dBc/Hz
1kHz .............. -141.5 dBc/Hz
10kHz .............. -157.2 dBc/Hz
100kHz .............. -157.2 dBc/Hz
Supply Voltage Modes:
(Core/Output)
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
2.5V/2.5V
2.5V/1.8V
0
C to 70
C ambient operating temperature
Industrial temperature available upon request
G
ENERAL
D
ESCRIPTION
The ICS83904-02 is a low skew, high perfor-
mance 1-to-4 Crystal Oscillator/Crystal-to-
LVCMOS Fanout Buffer and a member of the
HiPerClockSTM family of High Performance Clock
Solutions from ICS. The ICS83904-02 has
selectable single ended clock or two crystal-oscillator inputs.
There is an output enable to disable the outputs by placing them
into a high-impedance state.
Guaranteed output and part-to-part skew characteristics
make the ICS83904-02 ideal for those applications demanding
well defined performance and repeatability.
HiPerClockSTM
ICS
B
LOCK
D
IAGRAM
OE
CLK_SEL0
CLK_SEL1
CLK
Q0
Q3
OSC
OSC
0 0
0 1
1 0
1 1
Pullup
ICS83904-02
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
Pulldown
Pulldown
XTAL_IN0
XTAL_OUT0
XTAL_IN1
XTAL_OUT1
Pulldown
4 LVCMOS Outputs
CLK_SEL0
XTAL_OUT0
XTAL_IN0
V
DD
XTAL_IN1
XTAL_OUT1
CLK_SEL1
CLK
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DDO
Q0
Q1
GND
Q2
Q3
V
DDO
OE
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
P
IN
A
SSIGNMENT
Integrated
Circuit
Systems, Inc.
83904AG-02
www.icst.com/products/hiperclocks.html
REV. A JULY 8, 2005
3
ICS83904-02
L
OW
S
KEW
, 1-
TO
-4
C
RYSTAL
-
TO
-LVCMOS/LVTTL F
ANOUT
B
UFFER
PRELIMINARY
A
BSOLUTE
M
AXIMUM
R
ATINGS
Supply Voltage, V
DD
4.6V
Inputs, V
I
-0.5V to V
DD
+ 0.5 V
Outputs, V
O
-0.5V to V
DDO
+ 0.5V
Package Thermal Impedance,
JA
89C/W (0 lfpm)
Storage Temperature, T
STG
-65C to 150C
NOTE: 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 be-
yond those listed in the
DC Characteristics or AC Character-
istics is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect product reliability.
T
ABLE
4A. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
DD
= V
DDO
= 3.3V5%, T
A
= 0C
TO
70C
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ABLE
4D. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
DD
= V
DDO
= 2.5V5%, T
A
= 0C
TO
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4B. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
DD
= 3.3V5%, V
DDO
= 2.5V5%, T
A
= 0C
TO
70C
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4C. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
DD
= 3.3V5%, V
DDO
= 1.8V0.2V, T
A
= 0C
TO
70C
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4E. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
DD
= 2.5V5%, V
DDO
= 1.8V0.2V, T
A
= 0C
TO
70C
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