
LOW SKEW, 1-TO-8 CRYSTAL-TO-LVCMOS
FANOUT BUFFER
G
ENERAL
D
ESCRIPTION
The ICS83908I-02 is a low skew, high performance
1-to-8 Crystal Oscillator/3.3V LVCMOS-to-3.3V
LVCMOS fanout buffer and a member of the
HiPerClockS family of High Performance Clock
Solutions from IDT. The ICS83908I-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 83908I-02
IDT
/ ICS
LVCMOS FANOUT BUFFER
1
ICS83908AGI-02 REV. B JULY 24, 2007
PRELIMINARY
Guaranteed output and part-to-part skew characteristics make
the ICS83908I-02 ideal for those applications demanding well
defined performance and repeatability.
F
EATURES
Eight LVCMOS/LVTTL outputs
(19
Ω
typical output impedance)
Two Crystal oscillator input pairs
One LVCMOS/LVTTL clock input
Crystal input frequencry range: 10MHz - 40MHz
Output frequency: 200MHz (typical) CLK0
Output Skew: TBD
Part to Part Skew: TBD
RMS phase jitter @ 25MHz (100Hz - 1MHz):
0.22ps (typical) V
DD
= V
DDO
= 3.3V
Offset
Noise Power
100Hz ............. -111.4 dBc/Hz
1kHz ............. -139.9 dBc/Hz
10kHz ............. -157.3 dBc/Hz
100kHz ............. -157.5 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
-40
°
C to 85
°
C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
HiPerClockS
ICS
OE
CLK_SEL0
CLK_SEL1
CLK0
Q0
Q7
OSC
OSC
0 0
0 1
1 0
1 1
Pullup
ICS83908I-02
24-Lead, 173-MIL TSSOP
4.4mm x 7.8mm x 0.92mm
body package
G Package
Top View
V
DD
XTAL_IN0
XTAL_OUT0
V
DDO
Q0
Q1
GND
Q2
Q3
V
DDO
CLK_SEL0
CLK0
GND
XTAL_IN1
XTAL_OUT1
V
DDO
Q7
Q6
GND
Q5
Q4
V
DDO
CLK_SEL1
OE
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Pulldown
Pulldown
XTAL_IN0
XTAL_OUT0
XTAL_IN1
XTAL_OUT1
Pulldown
8 LVCMOS Outputs
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization
and/or qualification. Integrated Device Technology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.