sistors (DC current path to ground) or current sources must be
used for functionality. These outputs are designed to drive 50Ω
transmission lines. Matched impedance techniques should be
used to maximize operating frequency and minimize signal dis-
tortion.
Figures 1A and 1B
show two different layouts which are
recommended only as guidelines. Other suitable clock layouts
may exist and it would be recommended that the board designers
simulate to guarantee compatibility across all printed circuit and
clock component process variations.
FOR
2.5V LVPECL O
UTPUT
Figure 2A
and
Figure 2B
show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating 50Ω
to V
CC
- 2V. For V
CC
= 2.5V, the V
CC
- 2V is very close to ground level.
The R3 in Figure 2B can be eliminated and the termination is shown
in
Figure 2C.
T
ERMINATION
2.5V
2.5V
VCC=2.5V
R1
250
Zo = 50 Ohm
+
Zo = 50 Ohm
-
2,5V LVPECL
Driv er
R2
62.5
R4
62.5
R3
250
Z
o
= 50Ω
FOUT
FIN
F
IGURE
2A. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
Z
o
= 50Ω
2.5V
50Ω
1
RTT =
Z
((V
OH
+ V
OL
) / (V
CC
– 2)) – 2
o
50Ω
V
CC
- 2V
RTT
VCC=2.5V
Zo = 50 Ohm
+
Zo = 50 Ohm
-
2,5V LVPECL
Driv er
R1
50
R2
50
F
IGURE
1A. LVPECL O
UTPUT
T
ERMINATION
3.3V
125Ω
Z
o
= 50Ω
FOUT
FIN
125Ω
R3
18
F
IGURE
2B. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
Z
o
= 50Ω
84Ω
84Ω
2.5V
VCC=2.5V
Zo = 50 Ohm
+
Zo = 50 Ohm
-
F
IGURE
1B. LVPECL O
UTPUT
T
ERMINATION
2,5V LVPECL
Driv er
R1
50
R2
50
F
IGURE
2C. 2.5V LVPECL T
ERMINATION
E
XAMPLE
8Mx3AJ
www.icst.com/products/hiperclocks.html
3
REV. B FEBRUARY 10, 2006
PRELIMINARY
Integrated
Circuit
Systems, Inc.
P
ACKAGE
O
UTLINE
- J S
UFFIX
FOR
ICS8M
X
3
LVPCECL C
LOCK
O
SCILLATOR
X
6 L
EAD
SMT CERHERMETIC, 5mm
X
7mm
1.5mm
B
N
C
F
(TYP
.)
D2
D1
N
A
O
1
E (TYP
.)
PIN 1
INDEX
1
H
(TYP
.)
J (TYP
.)
Metalized
6 Terminal
Option Pkg.
G (TYP
.)
DIMENSIONS IN MILLIMETERS
SYMBOL
A
B
C
D
1
D
2
E
F
G
H
J
Nominal
5
7
1.5
2.54
5.08
2.6
0.6
1.4
0.15 Ref.
0.65 Ref.
Tolerance
±0.15
±0.15
±0.15
±0.13
±0.13
±0.13
±0.13
±0.13
-
-
P
ART
/O
RDER
N
UMBER
I
NFORMATION
Part/Order Number:
Device
Supply Voltage & Frequency Accuracy
G = 3.3V
±50 ppm
H = 3.3V
±100 ppm
J = 2.5/3.3V
±50 ppm
K = 2.5/3.3V
±100 ppm
Output Type
3 = LVPECL
Output Frequency (MHz)
Leading zeroes dropped. Fourth decimal place added if necessary.
Consult ICS for other frequencies.
ICS8M x 3 - fff.fff r p t u
Revision of Product
A = Initial Release
Package Type (individual devices)
J = 5x7mm ceramic SMT
Ambient Temperature Range
none = commercial = 0°C to +70°C
I = industrial = -40°C to +85°C
Bulk Packaging option
none = tube
T = tape and reel (1000 devices)
Note: Lead-free by default (no addition "LF" code needed).
(Pb-free and RoHS complaint)
8Mx3AJ
www.icst.com/products/hiperclocks.html
4
REV. B FEBRUARY 10, 2006
PRELIMINARY
Integrated
Circuit
Systems, Inc.
O
RDERING
I
NFORMATION
-
0°C
TO
+ 70°C (C
OMMERCIAL
)
Part/Order Number*
Marking*
Package
Shipping Packaging
ICS8M
X
3
LVPECL C
LOCK
O
SCILLATOR
Temperature
0°C to 70°C
ICS8Mx3-75.000AJ
ICS8Mx3 75.000
6 lead CERHERMETIC
Tube
ICS8Mx3-75.000AJT
ICS8Mx3 75.000
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
ICS8Mx3-100.000AJ
ICS8Mx3 100.000
6 lead CERHERMETIC
Tube
0°C to 70°C
ICS8Mx3-100.000AJT
ICS8Mx3 100.000
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
ICS8Mx3-106.250AJ
ICS8Mx3 106.250
6 lead CERHERMETIC
Tube
0°C to 70°C
1000 Tape & Reel
0°C to 70°C
ICS8Mx3-106.250AJT
ICS8Mx3 106.250
6 lead CERHERMETIC
ICS8Mx3-125.000AJ
ICS8Mx3 125.000
6 lead CERHERMETIC
Tube
0°C to 70°C
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
ICS8Mx3-125.000AJT
ICS8Mx3 125.000
ICS8Mx3-156.250AJ
ICS8Mx3 156.250
6 lead CERHERMETIC
Tube
0°C to 70°C
ICS8Mx3-156.250AJT
ICS8Mx3 156.250
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
0°C to 70°C
ICS8Mx3-159.375AJ
ICS8Mx3 159.375
6 lead CERHERMETIC
Tube
ICS8Mx3-159.375AJ
ICS8Mx3 159.375
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
ICS8Mx3 187.500
6 lead CERHERMETIC
Tube
0°C to 70°C
ICS8Mx3-187.500AJ
ICS8Mx3-187.500AJT
ICS8Mx3 187.500
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
ICS8Mx3-212.500AJ
ICS8Mx3 212.500
6 lead CERHERMETIC
Tube
0°C to 70°C
1000 Tape & Reel
0°C to 70°C
ICS8Mx3-212.500AJT
ICS8Mx3 212.500
6 lead CERHERMETIC
ICS8Mx3-250.000AJ
ICS8Mx3 250.000
6 lead CERHERMETIC
Tube
0°C to 70°C
ICS8Mx3-250.000AJT
ICS8Mx3 250.000
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
ICS8Mx3-312.500AJ
ICS8Mx3 312.500
6 lead CERHERMETIC
Tube
0°C to 70°C
ICS8Mx3-312.500AJT
ICS8Mx3 312.500
6 lead CERHERMETIC
1000 Tape & Reel
0°C to 70°C
*See table on page 4 for Par t/Order Number Information. Where "x" is applied, see
Supply Voltage & Frequency Accuracy
in the Par t/Order
Number Information table.
O
RDERING
I
NFORMATION
-
-40°C
TO
+85°C (I
NDUSTRIAL
)
Part/Order Number*
Marking*
Package
Shipping Packaging
Temperature
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
in the Par t/Order
ICS8Mx3-125.000AJI
ICS8Mx3 125.000
6 lead CERHERMETIC
Tube
ICS8Mx3-125.000AJIT
ICS8Mx3 125.000
6 lead CERHERMETIC
1000 Tape & Reel
ICS8Mx3-212.500AJI
ICS8Mx3 212.500
6 lead CERHERMETIC
Tube
ICS8Mx3-212.500AJIT
ICS8Mx3 212.500
6 lead CERHERMETIC
1000 Tape & Reel
ICS8Mx3-240.000AJI
ICS8Mx3 240.000
6 lead CERHERMETIC
Tube
ICS8Mx3-240.000AJIT
ICS8Mx3 240.000
6 lead CERHERMETIC
1000 Tape & Reel
ICS8Mx3-669.326AJI
ICS8Mx3 669.326
6 lead CERHERMETIC
Tube
ICS8Mx3-669.326AJIT
ICS8Mx3 669.326
6 lead CERHERMETIC
1000 Tape & Reel
*See table on page 4 for Par t/Order Number Information. Where "x" is applied, see
Supply Voltage & Frequency Accuracy
Number Information table.
The ICS logo is a registered trademark, and HiPerClockS is a trademark of Integrated Circuit Systems, Inc. All other trademarks are the property of their respective owners and
may be registered in certain jurisdictions.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use
or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use
in normal commercial and industrial applications. Any other applications such as those requiring high reliability or other extraordinary environmental requirements are not
recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product
for use in life support devices or critical medical instruments.
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