Output frequency is tunable with external capacitors
RMS phase jitter @ 100MHz, using a 25MHz crystal
(12kHz – 20MHz): 1.1936ps (typical)
2.5V operating supply
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) packages
ICS
Applications
•
•
•
•
•
•
•
SAS/SATA Host Bus Adapters
SATA Port Multipliers
SAS I/O Controllers
TapeDrive and HDD Array Controllers
SAS Edge and Fanout Expanders
HDDs and TapeDrives
Disk Storage Enterprise
Pin Assignment
Block Diagrams
XTAL_IN
XTAL_OUT
XTAL_IN
SSC_SEL0
SSC_SEL1
1
2
3
4
8
7
6
5
GND
nQ
Q
V
DD
25MHz
XTAL
XTAL_OUT
OSC
FemtoClock™
PLL
00 = SSC Off
01 = 0.5% Down-spread
10 = 0.23% Down-spread
11 = 0.5% Center-spread
Q
nQ
SSC_SEL(1:0)
Pulldown:Pulldown
SSC Output
Control Logic
8-Lead SOIC
ICS844441I
8-Lead SOIC, 150 mil
3.90mm x 4.90mm x 1.375mm package body
M Package
Top View
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
F_SEL1
GND
nPLL_SEL
nQ
Q
V
DD
F_SEL0
V
DD
nPLL_SEL
Pulldown
XTAL_IN
25MHz
XTAL
XTAL_OUT
OSC
FemtoClock™
PLL
0
1
00 = 75MHz
01 = 100MHz
10 = 150MHz
(default)
11 = 300MHz
Q
nQ
XTAL_OUT
XTAL_IN
SSC_SEL0
nc
nc
nc
SSC_SEL1
F_SEL(1:0)
SSC_SEL(1:0)
Pullup:Pulldown
Pulldown:Pulldown
Clock Output
Control Logic
16-Lead TSSOP
ICS844441I
16-Lead TSSOP
4.4mm x 5.0mm x 0.925mm package body
G Package
Top View
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.
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DIY/Open Source Hardware
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