PRELIMINARY
Integrated
Circuit
Systems, Inc.
ICS83904-02
L
OW
S
KEW
, 1-
TO
-4
C
RYSTAL
-
TO
-LVCMOS/LVTTL F
ANOUT
B
UFFER
F
EATURES
•
Four LVCMOS/LVTTL outputs,
19Ω 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-
HiPerClockS™
LVCMOS Fanout Buffer and a member of the
HiPerClockS™ 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.
ICS
Guaranteed output and part-to-part skew characteristics
make the ICS83904-02 ideal for those applications demanding
well defined performance and repeatability.
B
LOCK
D
IAGRAM
OE
CLK_SEL0
Pullup
Pulldown
CLK_SEL1 Pulldown
P
IN
A
SSIGNMENT
OSC
0 0
Q0
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
XTAL_IN0
XTAL_OUT0
XTAL_IN1
ICS83904-02
OSC
0 1
4 LVCMOS Outputs
XTAL_OUT1
Q3
CLK
Pulldown
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
1 0
1 1
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.
83904AG-02
www.icst.com/products/hiperclocks.html
REV. A JULY 8, 2005
1
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
