84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
1
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-LVCMOS / L VTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
GENERAL DESCRIPTION
The ICS84025 is a Crystal-to-L VCMOS/LVTTL
Frequency Synthesizer with Fanout Buf fer and
a member of the HiPerClockS™ family of High
Performance Clock Solutions from ICS. The
VCO frequency is programmed in steps equal
to the value of the crystal frequency. The VCO and
output frequency can be programmed using the feedback and
output frequency select pins. The low phase noise character-
istics of the ICS84025 make it an ideal clock source for Fibre
Channel 1 and Gigabit Ethernet applications.
BLOCK DIAGRAM PIN ASSIGNMENT
FEATURES
•6 L VCMOS/L VTTL outputs
•Crystal oscillator interface
•Output frequency range: 53.125MHz to 125MHz
•Crystal input frequency: 25MHz and 25.5MHz
•RMS phase jitter at 106.25, using a 25.5MHz crystal
(637KHz to 10MHz): 3.25ps
•Phase noise:
Offset Noise Power
100Hz ................. -100 dBc/Hz
1KHz ................. -115 dBc/Hz
10KHz ................. -125 dBc/Hz
100KHz ................. -127 dBc/Hz
•3.3V core, outputs may either be 3.3V , 2.5V or 1.8V
•0°C to 70°C ambient operating temperature
•Industrial temperature information available upon request
HiPerClockS™
,&6
Q0:Q5
PLL
6
/
Feedback
Divider
OSC Output
Divider
0
1
XTAL1
XTAL2
F_SEL1 PLL_SEL MR F_SEL0
ICS84025
24-Lead, 300-MIL SOIC
7.5mm x 15.33mm x 2.3mm body package
M Package
Top View
VDDO
Q0
GND
Q1
VDDO
Q2
GND
Q3
VDDO
Q4
GND
Q5
1
2
3
4
5
6
7
8
9
10
11
12
F_SEL0
F_SEL1
MR
XTAL1
XTAL2
GND
VDDA
VDD
PLL_SEL
GND
nc
VDDO
24
23
22
21
20
19
18
17
16
15
14
13
FUNCTION TABLE
stupnILATXycneuqerFtuptuO
RM1LES_F0LES_FTUO_F
1X X WOL
00 0 zHM5.52zHM521.35
00 1 zHM5.52zHM52.601
01 0 zHM52zHM5.26
01 1 zHM52zHM521
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.
DATA SHEET
ICS84025
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
1
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY
SYNTHESIZERW/FANOUTBUFFER
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
2
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / LVTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
TABLE 1. PIN DESCRIPTIONS
rebmuNemaNepyTnoitpircseD
31,9,5,1V
ODD
rewoP.snipylppustuptuO
20QtuptuO.slevelecafretniLTTVL/SOMCVL.tuptuokcolC
91,51,11,7,3DNGrewoP.dnuorgylppusrewoP
41QtuptuO.slevelecafretniLTTVL/SOMCVL.tuptuokcolC
62QtuptuO.slevelecafretniLTTVL/SOMCVL.tuptuokcolC
83QtuptuO.slevelecafretniLTTVL/SOMCVL.tuptuokcolC
014QtuptuO.slevelecafretniLTTVL/SOMCVL.tuptuokcolC
215QtuptuO.slevelecafretniLTTVL/SOMCVL.tuptuokcolC
41cndesunU.tcennocoN
61LES_LLPtupnIpulluP tupniehtsastupnilatsyrcdnaLLPehtneewtebstceleS ,WOLnehW.LLPstceles,HGIHnehW.sredividehtot .slevelecafretniLTTVL/SOMCVL.2LATX,1LATXstceles
71V
DD
rewoP.nipylppuseroC
81V
ADD
rewoP.nipylppusgolanA
12,021LATX,2LATXtupnI .tuptuoehtsi2LATX.tupniehtsi1LATX.ecafretnirotallicsolatsyrC
22RMtupnInwodlluP
sredividlanretnieht,HGIHcigolnehW.teseRretsaMHGIHevitcA eht,WOLcigolnehW.wologotstuptuoehtgnisuacteserera .delbaneerastuptuoehtdnasredividlanretni .slevelecafretniLTTVL/SOMCVL
321LES_FtupnInwodlluP .slevelecafretniLTTVL/SOMCVL.niptcelesycneuqerfkcabdeeF
420LES_FtupnIpulluP.slevelecafretniLTTVL/SOMCVL.niptcelesycneuqerftuptuO
:ETON
pulluP
dna
nwodlluP
.seulavlacipytrof,scitsiretcarahCniP,2elbaTeeS.srotsisertupnilanretniotrefer
TABLE 2. PIN CHARACTERISTICS
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
C
NI
ecnaticapaCtupnI 4Fp
R
PULLUP
rotsiseRpulluPtupnI 15KΩ
R
NWODLLUP
rotsiseRnwodlluPtupnI 15KΩ
C
DP
ecnaticapaCnoitapissiDrewoP )tuptuorep(
V
DD
V,
ODD
V564.3=DBTFp
V
DD
V,V564.3=
ODD
V526.2=DBTFp
V
DD
V,V564.3=
ODD
V59.1=DBTFp
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
2
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
3
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / L VTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDA = 3.3V ± 5%, TA = 0°C TO 70°C
TABLE 3B. LVCMOS / LVTTL DC CHARACTERISTICS, VDD = VDDA = 3.3V ± 5%, TA = 0°C TO 70°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSeroC 531.33.3564.3V
V
ADD
egatloVylppuSgolanA 531.33.3564.3V
V
ODD
egatloVylppuStuptuO 531.33.3564.3V
573.25.2526.2V
56.18.159.1V
I
DD
tnerruCylppuSrewoP 17Am
I
ADD
tnerruCylppuSgolanA 51Am
I
ODD
tnerruCylppuStuptuO 07Am
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
HI
egatloVhgiHtupnI ,RM,LES_LLP 1LES_F,0LES_F 2V
DD
3.0+V
V
LI
egatloVwoLtupnI ,RM,LES_LLP 1LES_F,0LES_F 3.0-8.0V
I
HI
tnerruChgiHtupnI 1LES_F,RMV
DD
V=
NI
V564.3=051Aµ
0LES_F,LES_LLPV
DD
V=
NI
V564.3=5Aµ
I
LI
tnerruCwoLtupnI 1LES_F,RMV
DD
V,V564.3=
NI
V0=5-Aµ
0LES_F,LES_LLPV
DD
V,V564.3=
NI
V0=051-Aµ
V
HO
1ETON;egatloVhgiHtuptuO V
ODD
%5±V3.3=6.2V
V
ODD
%5±V5.2=8.1V
V
ODD
V51.0±V8.1=V
ODD
54.0-V
V
LO
1ETON;egatloVwoLtuptuO V
ODD
%5±V3.3=5.0V
V
ODD
%5±V5.2=5.0V
V
ODD
V51.0±V8.1=54.0V
05htiwdetanimretstuptuO:1ETON ΩVot
ODD
,noitceSnoitamrofnItnemerusaeMretemaraPeeS.2/
.smargaid"tiucriCtseTdaoLtuptuO"
ABSOLUTE MAXIMUM RATINGS
Supply V oltage, VDD 4.6V
Inputs, VI-0.5V to VDD + 0.5 V
Outputs, VO-0.5V to VDDO + 0.5V
Package Thermal Impedance, θJA 46.2°C/W (0 lfpm)
Storage T emperature, TSTG -65°C to 150°C
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 .
TABLE 4. CRYSTAL CHARACTERISTICS
retemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
noitallicsOfoedoM latnemadnuF
ycneuqerF 525.52zHM
)RSE(ecnatsiseRseireStnelaviuqE 07 Ω
ecnaticapaCtnuhS 7Fp
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
3
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
4
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / LVTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
TABLE 5C. AC CHARACTERISTICS, VDD = VDDA = 3.3V ± 5%, VDDO = 1.8V ± 0.15V, TA = 0°C TO 70°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
F
TUO
ycneuqerFtuptuO521.35521zHM
t
)cc(tij2ETON;rettiJelcyC-ot-elcyC 05sp
t
)o(ks2,1ETON;wekStuptuO DBTsp
t
R
t/
F
emiTllaF/esiRtuptuO%08ot%02003007sp
cdoelcyCytuDtuptuO 05%
t
WP
htdiWesluPtuptuOt
PDOIRE
DBT-2/t
PDOIRE
DBT+2/sp
t
KCOL
emiTkcoLLLP 1sm
.noitcesnoitamrofnItnemerusaeMretemaraPeeS VtaderusaeM.snoitidnocdaollauqehtiwdnaegatlovylppusemasehttastuptuoneewtebwekssadenifeD:1ETON
ODD
.2/
.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:2ETON
TABLE 5A. AC CHARACTERISTICS, VDD = VDDA = VDDO = 3.3V ± 5%, TA = 0°C TO 70°C
TABLE 5B. AC CHARACTERISTICS, VDD = VDDA = 3.3V ± 5%, VDDO = 2.5V ± 5%, TA = 0°C TO 70°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
F
TUO
ycneuqerFtuptuO521.35521zHM
t
)cc(tij2ETON;rettiJelcyC-ot-elcyC 03sp
t
)o(ks2,1ETON;wekStuptuO DBTsp
t
R
t/
F
emiTllaF/esiRtuptuO%08ot%02003007sp
cdoelcyCytuDtuptuO 05%
t
WP
htdiWesluPtuptuOt
PDOIRE
DBT-2/t
PDOIRE
DBT+2/sp
t
KCOL
emiTkcoLLLP 1sm
.noitcesnoitamrofnItnemerusaeMretemaraPeeS VtaderusaeM.snoitidnocdaollauqehtiwdnaegatlovylppusemasehttastuptuoneewtebwekssadenifeD:1ETON
ODD
.2/
.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:2ETON
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
F
TUO
ycneuqerFtuptuO521.35521zHM
t
)cc(tij2ETON;rettiJelcyC-ot-elcyC 03sp
t
)o(ks2,1ETON;wekStuptuO DBTsp
t
R
t/
F
emiTllaF/esiRtuptuO%08ot%02003007sp
cdoelcyCytuDtuptuO 05%
t
WP
htdiWesluPtuptuOt
PDOIRE
DBT-2/t
PDOIRE
DBT+2/sp
t
KCOL
emiTkcoLLLP 1sm
.noitcesnoitamrofnItnemerusaeMretemaraPeeS VtaderusaeM.snoitidnocdaollauqehtiwdnaegatlovylppusemasehttastuptuoneewtebwekssadenifeD:1ETON
ODD
.2/
.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:2ETON
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
4
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
5
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / L VTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
TYPICAL PHASE NOISE
25MHz Input
RMS Phase Noise Jitter
12K to 20MHz = 3.5ps (typical)
125MHz
62.5MHz
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150 10 100 1k 10k 100k 1M 10M
OFFSET FREQUENCY (HZ)
PHASE NOISE
(dBc)
HZ
OFFSET FREQUENCY (HZ)
PHASE NOISE
(dBc)
HZ
25.5MHz Input
RMS Phase Noise Jitter
12K to 20MHz = 3.5ps (typical)
106.25MHz
53.125MHz
10 100 1k 10k 100k 1M 10M
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
5
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
6
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / LVTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
SCOPE
Qx
LVCMOS
3.3V OUTPUT LOAD AC TEST CIRCUIT 3.3V/2.5V OUTPUT LOAD AC TEST CIRCUIT
OUTPUT SKEW3.3V/1.8V OUTPUT LOAD AC TEST CIRCUIT
odc, tPW & tPERIOD
SCOPE
Qx
LVCMOS
2.05V±5%
VDDO
GND = -1.25V±5%
VDD
1.25V±5%
SCOPE
Qx
LVCMOS
VDD, VDDA, VDDO = 1.65V±5%
GND = -1.65V±5%
tsk(o)
V
DDO
2
V
DDO
2
Qy
Qx
Q0:Q5
➤
➤
➤
➤
V
DDO
2
V
DDO
2
V
DDO
2
Cycle-to-Cycle Jitter
t
jit(cc) =
t
cycle n –
t
cycle n+1
1000 Cycles
t
cycle n
t
cycle n+1
Period Jitter
V
OH
V
REF
V
OL
Mean Period
(First edge after trigger)
Reference Point
(Trigger Edge)
1σ contains 68.26% of all measurements
2σ contains 95.4% of all measurements
3σ contains 99.73% of all measurements
4σ contains 99.99366% of all measurements
6σ contains (100-1.973x10
-7
)% of all measurements
Histogram
Pulse Width t
PERIOD
t
PW
t
PERIOD
odc =
V
DDO
2
Q0:Q5
OUTPUT RISE/FALL TIME
Clock Outputs 20%
80% 80%
20%
t
R
t
F
PARAMETER MEASUREMENT INFORMATION
GND = -0.9V±0.075V
VDDO
VDD
2.4±0.9V 0.9V±0.075V
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
6
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
7
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / L VTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
APPLICATION INFORMATION
As in any high speed analog circuitry , the power supply pins
are vulnerable to random noise. The ICS84025 provides sepa-
rate power supplies to isolate any high switching
noise from the outputs to the internal PLL. VDD, VDDA, and VDDO
should be individually connected to the power supply
plane through vias, and bypass capacitors should be
used for each pin. To achieve optimum jitter performance,
power supply isolation is required.
Figure 2
illustrates how
a 24Ω resistor along with a 10µF and a .01µF bypass
capacitor should be connected to each VDDA pin. FIGURE 2. P OWER SUPPLY FILTERING
24Ω
VDDA 10 µF
.01µF
3.3V
.01µF
VDD
Figure 3. CRYSTAL INPUt INTERFACE
CRYSTAL INPUT INTERFACE
A crystal can be characterized for either series or parallel
mode operation. The ICS84025 has a built-in crystal oscillator
circuit. This interface can accept either a series or parallel
crystal without additional components and generate
POWER SUPPLY FILTERING TECHNIQUES
frequencies with accuracy suitable for most applications.
Additional accuracy can be achieved by adding two small
capacitors C1 and C2 as shown in
Figure 3
.
C2
22pF
C1
18pF
25MHz X1
ICS84025
20
21
XTAL2
XTAL1
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
7
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
8
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / LVTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
FIGURE 4A. ICS84025 SCHEMATIC EXAMPLE
SCHEMATIC EXAMPLE
Figure 4A
shows a schematic example of using an ICS84025. In
this example, the input is a 25MHz parallel resonant crystal with
load capacitor CL=18pF. The frequency fine tuning capacitors
C1 and C2 is 22pF and 18pF respectively. This example also
shows logic control input handling. The configuration is set at
F_SEL[1:0]=11 therefore the output frequency is 125MHz. It is
recommended to have one decouple capacitor per power pin.
Each decoupling capacitor should be located as close as pos-
sible to the power pin. The low pass filter R7, C11 and C16 for
clean analog supply should also be located as close to the VDDA
pin as possible.
VDD
RD2
SP
R1
43
F_SEL1
RD4
SP
C7
0.1u
(U1,17)
C3
0.1u
SP = Spare, Not Installed
F_SEL1
RU3
1K
C2
18p
RD3
SP
VDD
C16
10u
VDD
C6
0.1u
VDDA
PLL_SEL
C5
0.1u
X1
25MHz,18pF
R6
43
RU4
1K
(U1,13)
F_SEL0
PLL_SEL
(U1,5)
C1 22p
Zo = 50
(U1,1)
RU2
1K
C11
0.1u
R7
10
F_SEL0
C4
0.1u
(U1,9)
Zo = 50
VDD=3.3V
U1
ICS84025
1
2
3
4
5
6
7
8
9
10
11
15
17
18
19
20
21
22
23
24
14 1213
16
VDDO
Q0
GND
Q1
VDDO
Q2
GND
Q3
VDDO
Q4
GND
GND
VDD
VDDA
GND
XTAL2
XTAL1
MR
F_SEL1
F_SEL0
NC Q5VDDO
PLL_SEL
VDD
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
8
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
9
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / L VTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
FIGURE 4B. PCB BOARD LAYOUT FOR ICS84025
The following component footprints are used in this layout
example:
All the resistors and capacitors are size 0603.
POWER AND GROUNDING
Place the decoupling capacitors as close as possible to the power
pins. If space allows, placement of the decoupling capacitor on
the component side is preferred. This can reduce unwanted in-
ductance between the decoupling capacitor and the power pin
caused by the via.
Maximize the power and ground pad sizes and number of vias
capacitors. This can reduce the inductance between the power
and ground planes and the component power and ground pins.
The RC filter consisting of R7, C11, and C16 should be placed
as close to the VDDA pin as possible.
CLOCK TRACES AND TERMINATION
Poor signal integrity can degrade the system performance or
cause system failure. In synchronous high-speed digital systems,
the clock signal is less tolerant to poor signal integrity than other
signals. Any ringing on the rising or falling edge or excessive ring
back can cause system failure. The shape of the trace and the
trace delay might be restricted by the available space on the board
and the component location. While routing the traces, the clock
signal traces should be routed first and should be locked prior to
routing other signal traces.
•The differential 50Ω output traces should have the
same length.
•Avoid sharp angles on the clock trace. Sharp angle
turns cause the characteristic impedance to change on
the transmission lines.
•Keep the clock traces on the same layer. Whenever pos-
sible, avoid placing vias on the clock traces. Placement
of vias on the traces can affect the trace characteristic
impedance and hence degrade signal integrity.
•T o prevent cross talk, avoid routing other signal traces in
parallel with the clock traces. If running parallel traces is
unavoidable, allow a separation of at least three trace
widths between the differential clock trace and the other
signal trace.
•Make sure no other signal traces are routed between the
clock trace pair .
•The matching termination resistors should be located as
close to the receiver input pins as possible.
CRYSTAL
The crystal X1 should be located as close as possible to the pins
21 (XTAL1) and 20 (XTAL2). The trace length between the X1
and U1 should be kept to a minimum to avoid unwanted parasitic
inductance and capacitance. Other signal traces should not be
routed near the crystal traces.
VDD
VIA
C1
R7
50 Ohm traces
PIN1
R3
R5
R2
R1
C7
GND
C4
C2
50 Oh m traces
C3
C16
C11
C5
R6
X1
C6
VDDA
R4
50 Ohm traces
50 Ohm traces
50 Oh m traces
50 Oh m traces
U1
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
9
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
10
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / LVTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
RELIABILITY INFORMATION
TRANSISTOR COUNT
The transistor count for ICS84025 is: 2949
TABLE 6. θJAVS. AIR FLOW TABLE
qJA by Velocity (Linear Feet per Minute)
0 200 500
Single-Layer PCB, JEDEC Standard Test Boards 83.2°C/W 65.7°C/W 57.5°C/W
Multi-Layer PCB, JEDEC Standard Test Boards 46.2°C/W 39.7°C/W 36.8°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
10
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
11
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / L VTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
PACKAGE OUTLINE - M SUFFIX
TABLE 7. PACKAGE DIMENSIONS
Reference Document: JEDEC Publication 95, MS-013, MO-119
LOBMYS sretemilliM
muminiMmumixaM
N42
A--56.2
1A01.0--
2A50.255.2
B33.015.0
C81.023.0
D02.5158.51
E04.706.7
eCISAB72.1
H00.0156.01
h52.057.0
L04.072.1
α°0 °8
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
11
84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003
12
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-L VCMOS / LVTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
TABLE 8. ORDERING INFORMATION
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 applications. Any other applications such as those requiring extended temperature range, 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.
rebmuNredrO/traPgnikraMegakcaPtnuoCerutarepmeT
ME52048SCIME52048SCICIOSdaeL42ebutrep03C°07otC°0
TME52048SCIME52048SCIleeRdnaepaTnoCIOSdaeL420001C°07otC°0
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD
IDT™ / ICS™ CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER ICS84025
12
© 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device
Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered
trademarks used to identify products or services of their respective owners.
Printed in USA
XX-XXXX-XXXXX
Corporate Headquarters
Integrated Device Technology, Inc.
6024 Silver Creek Valley Road
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Reg. No. 199707558G
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#20-03 Wisma Atria
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www.IDT.com
ICS252
FIELD PROGRAMMABLE DUAL OUTPUT SS VERSACLOCK SYNTHESIZER TSD
ICS650-40A
ETHERNET SWITCH CLOCK SOURCE TSD
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZERW/FANOUTBUFFER TSD