Page 1
Integrated
Circuit
Systems, Inc.
ICS8343I
LOW SKEW 1-TO-16
FANOUT BUFFER
GENERAL DESCRIPTION
,&6
HiPerClockS™
mercial temperature range. Guaranteed output and part-topart skew characteristics make the ICS8343I ideal for those
clock distribution applications demanding well defined performance and repeatability .
The ICS8343I is a low skew, 1-to-16 Fanout
Buffer and a member of the HiPerClockS™ family
of High Performance Clock Solutions from ICS.
The ICS8343I is at 5.0V, 3.3V, 2.5V and mixed
3.3V input and 2.5V supply modes over the com-
FEATURES
• 16 L VCMOS outputs
• Output frequency up to 200MHz
• 250ps output skew
•· 700ps part to part
• CMOS compatible clock input at 5V , L VTTL and LVCMOS
compatible at 3.3V and 2.5V
• L VTTL output enable inputs
• Dual output enable inputs facilitates 1-to-16 or 1-to-8 input to
output modes
• 5.0V , 3.3V , 2.5V or mixed 3.3V , 2.5V from -40°C to 85°C
ambient operating temperature
• 32 lead low-profile QFP(LQFP), 7mm x 7mm x 1.4mm
package body , 0.8mm package lead pitch
BLOCK DIAGRAM PIN ASSIGNMENT
CLK
OE2
VDD1 VDD2VDD
VDD1
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
OE1
GND
OE2
Q15
Q14
Q13
Q12
Q11
Q10
Q9
Q8
VDD1
VDD1
Q3
Q4
GND
GND
GND
Q2
32 31 30 29 28 27 26 25
1
2
3
4
5
6
7
8
ICS8343I
9 10 11 12 13 14 15 16
VDD
CLK
Q7
Q6
Q5
32-Lead LQFP
OE1
Q0
Q1
Q15
Q8
Q14
Q9
Q13
Q10
24
23
22
21
20
19
18
17
VDD2
VDD2
VDD2
Q12
Q11
GND
GND
GND
Y package
T op View
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
1
Page 2
Integrated
Circuit
Systems, Inc.
TABLE 1. PIN DESCRIPTIONS
rebmuNemaNepyTnoitpircseD
3,2,11DDVrewoP .V5.2roV3.3,V5ottcennoC.ylppusrewop7Qurht0QtuptuO
5,44Q,3QtuptuO41.stuptuokcolC Ω .ecnadepmituptuolacipyt
8,7,6DNGrewoP.dnuorgottcennoC
11,01,97Q,6Q,5QtuptuO41.stuptuokcolC Ω .ecnadepmituptuolacipyt
21KLCtupnI.tupnikcolC
31DDVrewoPV5.2roV3.3,V5ottcennoC.ylppusrewoptupnI
61,51,4101Q,9Q,8QtuptuO41.stuptuokcolC Ω .ecnadepmituptuolacipyt
91,81,71DNGrewoP.dnuorgottcennoC
12,0221Q,11QtuptuO41.stuptuokcolC Ω .ecnadepmituptuolacipyt
42,32,222DDVrewoP .V5.2roV3.3,V5ottcennoC.ylppusrewop51Qurht8QtuptuO
72,62,5251Q,41Q,31QtuptuO41.stuptuokcolC Ω .ecnadepmituptuolacipyt
822EOtupnIpulluP .etatsZiHot51Qurht8QstuptuosecrofwolnehW.elbanetuptuO
921EOtupnIpulluP .etatsZiHot7Qurht0QstuptuosecrofwolnehW.elbanetuptuO
23,13,032Q,1Q,0QtuptuO41.stuptuokcolC Ω .ecnadepmituptuolacipyt
ICS8343I
LOW SKEW 1-TO-16
FANOUT BUFFER
TABLE 2. PIN CHARACTERISTICS
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
NICecnaticapaCtupnI
DPC
PULLUPRrotsiseRpulluPtupnI Fp
NWODLLUPRrotsiseRnwodlluPtupnI Fp
TUOR
ecnaticapaC
)tuptuorep(
TABLE 3. FUNCTION TABLE
1EO2EO7Qurht0Q51Qurht8Q
00 ZiHZiH
10 evitcAZiH
01 ZiHevitcA
11 evitcAevitcA
KLC Fp
2EO,1EO Fp
noitapissiDrewoP
stupnIstuptuO
V52.5=2DDV,1DDV51Fp
V74.3=2DDV,1DDV11Fp
V36.2=2DDV,1DDV5.9Fp
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
2
Page 3
Integrated
Circuit
Systems, Inc.
LOW SKEW 1-TO-16
ICS8343I
FANOUT BUFFER
ABSOLUTE MAXIMUM RATINGS
Supply Voltage 7V
Inputs -0.5V to VDD+0.5 V
Outputs -0.5V to VDD+0.5V
Ambient Operating T emperature -40°C to 85°C
Storage T emperature -65°C to 150°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are
stress specifications only and functional operation of the device at these or any conditions beyond those listed in the
istics
or
AC Characteristics
reliability.
is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDD1 = VDD2 = 5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
2DDV,1DDV,DDVegatloVylppuSgnitarepO57.40.552.5V
DDItnerruCylppuSgnitarepOtupnIV52.5=xDDV=DDV011Aµ
DC Character-
TABLE 4B. L VCMOS DC CHARACTERISTICS, VDD = VDD1 = VDD2 = 5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
HIVegatloVhgiHtupnI
LIVegatloVwoLtupnI
HIIhgiHtupnItnerruCKLCV52.5=NIV=DDV1Aµ
LIItnerruCwoLtupnIKLCV0=NIV,V52.5=DDV04-Aµ
HOVegatloVhgiHtuptuOAm52-=HOI,V57.4=xDDV4V
LOVegatloVwoLtuptuOAm52=LOI,V57.4=xDDV8.0V
HZOItnerruCegakaeLecnadepmIhgiHxDDV=TUOV,V0=xEO1Aµ
LZOItnerruCegakaeLecnadepmIhgiH=TUOV,V0=xEOV01-Aµ
KLC
xEOV52.5=DDV2 3.0+DDVV
KLC
xEOV57.4=DDV3.0-8.0V
xEO52.5=NIV=DDV1Aµ
xEOV0=NIV,V52.5=DDV04-Aµ
V57.4=DDV23.350.5V
V52.5=DDV76.355.5V
V57.4=DDV3.0-24.1V
V52.5=DDV3.0-75.1V
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
3
Page 4
Integrated
Circuit
Systems, Inc.
LOW SKEW 1-TO-16
ICS8343I
FANOUT BUFFER
TABLE 5A. AC CHARACTERISTICS, VDD = VDD1 = VDD2 = 5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
XAMfycneuqerFtupnImumixaM 66zHM
HLpthgiH-ot-woL,yaleDnoitagaporP 0<f≤ zHM669.04.18.1sn
LHptwoL-ot-hgiH,yaleDnoitagaporP0<f≤ zHM669.04.19.1sn
)o(kst3ETON;wekStuptuO
)pp(kst4ETON;wekStraP-ot-traP
RtemiTesiRtuptuOV0.2otV8.0morfderusaeM3.05.0sn
FtemiTllaFtuptuOV8.0otV0.2morfderusaeM3.04.0sn
WPthtdiWesluPtuptuO
05htiwdetanimretstuptuO:2ETON Ω .2/xDDVotdetcennocrotsiser
.snoitidnocdaollauqehtiwdna
egdegnisirnoderusaeM
2/xDDV@
egdegnisirnoderusaeM
2/xDDV@
2/ELCYCt
57.0-
.esiwrehtodetonsselnuXAMftaderusaemsretemarapllA:1ETON
2/ELCYCt
.snoitidnocdaollauqehtiwdnasegatlovylppusemasehttastuptuossorcawekssadenifeD:3ETON
segatlovylppusemasehttagnitareposecivedtnereffidnostuptuotnereffidtawekssadenifeD:4ETON
053sp
007sp
2/ELCYCt
57.0+
sn
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
4
Page 5
Integrated
Circuit
Systems, Inc.
LOW SKEW 1-TO-16
ICS8343I
FANOUT BUFFER
TABLE 4C. POWER SUPPLY DC CHARACTERISTICS, VDD = VDD1 = VDD2 = 3.3V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
2DDV,1DDV,DDVegatloVylppuSgnitarepO531.33.3564.3V
DDItnerruCylppuSgnitarepOtupnI 001Aµ
TABLE 4D. LVCMOS DC CHARACTERISTICS, VDD = VDD1 = VDD2 = 3.3V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
HIVegatloVhgiHtupnI
LIVegatloVwoLtupnI
HIIhgiHtupnItnerruCKLCDDV=NIV1Aµ
LIItnerruCwoLtupnIKLCV0=NIV51-Aµ
HOVegatloVhgiHtuptuOAm52-=HOI,V531.3=DDV4.2V
LOVegatloVwoLtuptuOAm52=LOI,V531.3=DDV8.0V
HZOItnerruCegakaeLecnadepmIhgiHDDV=TUOV,V0=xEO1Aµ
LZOItnerruCegakaeLecnadepmIhgiH=TUOV,V0=xEOV01-Aµ
KLCV564.3=DDV2 3.0+DDVV
xEOV564.3=DDV2 3.0+DDVV
KLCV531.3=DDV3.0-8.0V
xEOV531.3=DDV3.0-8.0V
xEODDV=NIV1Aµ
xEOV0=NIV51-Aµ
TABLE 5B. AC CHARACTERISTICS, VDD = VDD1 = VDD2 = 3.3V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
XAMfycneuqerFtupnImumixaM 002zHM
HLpthgiH-ot-woL,yaleDnoitagaporP0≤ f ≤ zHM0020.11.21.3sn
LHptwoL-ot-hgiH,yaleDnoitagaporP0≤ f ≤ zHM0021.10.28.2sn
)o(kst3ETON;wekStuptuO
)pp(kst4ETON;wekStraP-ot-traP
RtemiTesiRtuptuO0≤ f ≤ zHM0025.08.0sn
FtemiTllaFtuptuO0≤ f ≤ zHM0029.07.1sn
WPthtdiWesluPtuptuO
05htiwdetanimretstuptuO:2ETON Ω .2/xDDVotdetcennocrotsiser
.snoitidnocdaollauqehtiwdna
egdegnisirnoderusaeM
2/xDDV@
egdegnisirnoderusaeM
2/xDDV@
2/ELCYCt
5.0-
.esiwrehtodetonsselnuXAMftaderusaemsretemarapllA:1ETON
2/ELCYCt
.snoitidnocdaollauqehtiwdnasegatlovylppusemasehttastuptuossorcawekssadenifeD:3ETON
segatlovylppusemasehttagnitareposecivedtnereffidnostuptuotnereffidtawekssadenifeD:4ETON
052sp
007sp
2/ELCYCt
5.0+
sn
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
5
Page 6
Integrated
Circuit
Systems, Inc.
LOW SKEW 1-TO-16
ICS8343I
FANOUT BUFFER
TABLE 4E. DC POWER SUPPLY CHARACTERISTICS, VDD = 3.3V±5%, VDD1 = VDD2 = 2.5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
DDVegatloVylppuSgnitarepOtupnI531.33.3564.3V
2DDV,1DDVegatloVylppuSgnitarepOtuO573.25.2526.2V
DDItnerruCylppuSgnitarepOtupnI 001Aµ
TABLE 4F. LVCMOS DC CHARACTERISTICS, VDD = 3.3V±5%, VDD1 = VDD2 = 2.5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
HIVegatloVhgiHtupnI
LIVegatloVwoLtupnI
HIIhgiHtupnItnerruCKLCDDV=NIV1Aµ
LIItnerruCwoLtupnIKLCV0=NIV51-Aµ
HOVegatloVhgiHtuptuOAm52-=HOI,V573.2=DDV5.1V
LOVegatloVwoLtuptuOAm52=LOI,V573.2=DDV8.0V
HZOItnerruCegakaeLecnadepmIhgiHDDV=TUOV,V0=xEO1Aµ
LZOItnerruCegakaeLecnadepmIhgiH=TUOV,V0=xEOV01-Aµ
KLCV564.3=DDV2 3.0+DDVV
xEOV564.3=DDV2 3.0+DDVV
KLCV531.3=DDV3.0-8.0V
xEOV531.3=DDV3.0-8.0V
xEODDV=NIV1Aµ
xEOV0=NIV51-Aµ
TABLE 5C. AC CHARACTERISTICS, VDD = 3.3V±5%, VDD1 = VDD2 = 2.5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
XAMfycneuqerFtupnImumixaM 002zHM
HLpthgiH-ot-woL,yaleDnoitagaporP0≤ f ≤ zHM0020.13.22.3sn
LHptwoL-ot-hgiH,yaleDnoitagaporP0≤ f ≤ zHM0024.13.22.3sn
)o(kst3ETON;wekStuptuO
)pp(kst4ETON;wekStraP-ot-traP
RtemiTesiRtuptuO0≤ f ≤ zHM0025.08.0sn
FtemiTllaFtuptuO0≤ f ≤ zHM0029.07.1sn
WPthtdiWesluPtuptuO
05htiwdetanimretstuptuO:2ETON Ω .2/xDDVotdetcennocrotsiser
.snoitidnocdaollauqehtiwdna
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
egdegnisirnoderusaeM
2/xDDV@
egdegnisirnoderusaeM
2/xDDV@
2/ELCYCt
5.0-
.esiwrehtodetonsselnuXAMftaderusaemsretemarapllA:1ETON
2/ELCYCt
oitidnocdaollauqehtiwdnasegatlovylppusemasehttastuptuossorcawekssadenifeD:3ETON
segatlovylppusemasehttagnitareposecivedtnereffidnostuptuotnereffidtawekssadenifeD:4ETON
052sp
007sp
2/ELCYCt
5.0+
sn
6
Page 7
Integrated
Circuit
Systems, Inc.
LOW SKEW 1-TO-16
ICS8343I
FANOUT BUFFER
TABLE 4G. POWER SUPPLY DC CHARACTERISTICS, VDD = VDD1 = VDD2 = 2.5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
2DDV,1DDV,DDVegatloVylppuSgnitarepO573.25.2526.2V
DDItnerruCylppuSgnitarepOtupnI 001Aµ
TABLE 4H. L VCMOS DC CHARACTERISTICS, VDD = VDD1 = VDD2 = 2.5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
HIVegatloVhgiHtupnI
LIVegatloVwoLtupnI
HIIhgiHtupnItnerruCKLCDDV=NIV1Aµ
LIItnerruCwoLtupnIKLCV0=NIV01-Aµ
HOVegatloVhgiHtuptuOAm52-=HOI,V573.2=DDV5.1V
LOVegatloVwoLtuptuOAm52=LOI,V573.2=DDV8.0V
HZOItnerruCegakaeLecnadepmIhgiHDDV=TUOV,V0=xEO1Aµ
LZOItnerruCegakaeLecnadepmIhgiH=TUOV,V0=xEOV01-Aµ
KLCV526.2=DDV2 3.0+DDVV
xEOV526.2=DDV2 3.0+DDVV
KLCV573.2=DDV3.0-8.0V
xEOV573.2=DDV3.0-8.0V
xEODDV=NIV1Aµ
xEOV0=NIV01-Aµ
TABLE 5D. AC CHARACTERISTICS, VDD = VDD1 = VDD2 = 2.5V±5%, TA = -40° TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
XAMfycneuqerFtupnImumixaM 331zHM
HLpthgiH-ot-woL,yaleDnoitagaporP0≤ f ≤ zHM3310.15.27.3sn
LHptwoL-ot-hgiH,yaleDnoitagaporP0≤ f ≤ zHM3314.16.25.3sn
)o(kst3ETON;wekStuptuO
)pp(kst4ETON;wekStraP-ot-traP
RtemiTesiRtuptuO 5.08.0sn
FtemiTllaFtuptuO 9.07.1sn
WPthtdiWesluPtuptuO
05htiwdetanimretstuptuO:2ETON Ω .2/xDDVotdetcennocrotsiser
.snoitidnocdaollauqehtiwdna
egdegnisirnoderusaeM
2/xDDV@
egdegnisirnoderusaeM
2/xDDV@
2/ELCYCt
57.0-
.esiwrehtodetonsselnuXAMftaderusaemsretemarapllA:1ETON
2/ELCYCt
.snoitidnocdaollauqehtiwdnasegatlovylppusemasehttastuptuossorcawekssadenifeD:3ETON
segatlovylppusemasehttagnitareposecivedtnereffidnostuptuotnereffidtawekssadenifeD:4ETON
052sp
057sp
2/ELCYCt
57.0+
sn
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
7
Page 8
Integrated
Circuit
Systems, Inc.
PACKAGE OUTLINE - Y SUFFIX
ICS8343I
LOW SKEW 1-TO-16
FANOUT BUFFER
D
D2
θ
32
1
2
3
E
E1
817
N
916
A
A2
ccc
C
A1
TABLE 6. PACKAGE DIMENSIONS
LOBMYS
N
A
1A
2A
b
c
D
1D
2D
E
1E
2E
e
L
q
ccc
50.051.0
53.104.154.1
03.073.054.0
90.002.0
54.006.057.0
°
0
25
24
E2
D1
SEATING
-CPLANE
b
c
NOITAIRAVCEDEJ
SRETEMILLIMNISNOISNEMIDLLA
ABB
MUMINIMLANIMONMUMIXAM
23
CISAB00.9
CISAB00.7
06.5
CISAB00.9
CISAB00.7
06.5
CISAB08.0
L
e
06.1
7
°
01.0
Reference Document: JEDEC Publication 95, MS-026
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
8
Page 9
Integrated
Circuit
Systems, Inc.
TABLE 7. ORDERING INFORMATION
rebmuNredrO/traPgnikraMegakcaPtnuoCerutarepmeT
IY3438SCIIY3438SCIPFQLdaeL23yartrep052C°58otC°04-
TIY3438SCIIY3438SCIleeRdnaepaTnoPFQLdaeL230002C°58otC°04-
ICS8343I
LOW SKEW 1-TO-16
FANOUT BUFFER
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.
8343I www.icst.com/products/hiperclocks.html REV. B MARCH 8, 2001
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