ICST ICS8535AG-11, ICS8535AG-11T Datasheet
Integrated
Circuit
Systems, Inc.
ICS8535-11
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
LVCMOS-TO-3.3V L VPECL FANOUT BUFFER
GENERAL DESCRIPTION
,&6
HiPerClockS™
able single ended clock or crystal inputs. The single ended
clock input accepts LVCMOS or LVTTL input levels and
translate them to 3.3V LVPECL levels. The output enable is
internally synchronized to eliminate runt pulses on the outputs during asynchronous assertion/deassertion of the clock
enable pin.
Guaranteed output and part-to-part skew characteristics
make the ICS8535-11 ideal for those applications demanding well defined performance and repeatability.
The ICS8535-11 is a low skew , high performance
1-to-4 3.3V Crystal Oscillator/LVCMOS-to-3.3V
LVPECL fanout buffer and a member of the
HiPerClockS™ family of High Performance Clock
Solutions from ICS. The ICS8535-11 has select-
FEATURES
• 4 differential 3.3V LVPECL outputs
• Selectable CLK or crystal inputs
• CLK can accept the following input levels: LVCMOS, L VTTL
• Maximum output frequency up to 266MHz
• Output skew: 35ps (maximum)
• Part-to-part skew: 150ps (maximum)
• Propagation delay: 2.4ns (maximum)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Industrial T emperature information available upon request
BLOCK DIAGRAM PIN ASSIGNMENT
CLK_EN
CLK
XTAL1
XTAL2
CLK_SEL
D
Q
LE
0
1
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
6.5mm x 4.4mm x 0.92mm Package Body
V
EE
CLK_EN
CLK_SEL
CLK
nc
XTAL1
XTAL2
nc
nc
V
CC
ICS8535-11
20-Lead TSSOP
20
1
19
2
18
3
17
4
16
5
15
6
14
7
13
8
12
9
11
10
G Package
Top View
Q0
nQ0
V
CC
Q1
nQ1
Q2
nQ2
V
CC
Q3
nQ3
8535AG-11 www.icst.com/products/hiperclocks.html REV. B JULY 27, 2001
1
Integrated
Circuit
Systems, Inc.
TABLE 1. PIN DESCRIPTIONS
rebmuNemaNepyTnoitpircseD
1V
2NE_KLCtupnIpulluP
3LES_KLCtupnInwodlluP
4KLCtupnInwodlluP.tupnikcolcLTTVL/SOMCVLgnitrevni-noN
9,8,5cndesunU.tcennocoN
61LATXtupnInwodlluP.tupnirotallicsolatsyrC
72LATXtupnIpulluP.tupnirotallicsolatsyrC
81,31,01V
21,113Q,3QntuptuO.slevelecafretniLCEPVL.stuptuokcolclaitnereffiD
51,412Q,2QntuptuO.slevelecafretniLCEPVL.stuptuokcolclaitnereffiD
71,611Q,1QntuptuO.slevelecafretniLCEPVL.stuptuokcolclaitnereffiD
02,910Q,0QntuptuO.slevelecafretniLCEPVL.stuptuokcolclaitnereffiD
pulluP
:ETON
EE
CC
dna
nwodlluP
rewoP.dnuorgottcennoC.nipylppusevitageN
rewoP.V3.3ottcennoC.snipylppusevitisoP
ICS8535-11
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
LVCMOS-TO-3.3V LVPECL FANOUT BUFFER
kcolcswollofstuptuokcolc,HGIHnehW.elbanekcolcgnizinorhcnyS
decroferastuptuoQn,woldecroferastuptuoQ,WOLnehW.tupni
.slevelecafretniLTTVL/SOMCVL.hgih
,WOLnehW.tupniKLCstceles,HGIHnehW.tupnitceleskcolC
.slevelecafretniLTTVL/SOMCVL.stupniLATXstceles
.seulavlacipytrof,scitsiretcarahCniP,2elbaTeeS.srotsisertupnilanretniotsrefer
TABLE 2. PIN CHARACTERISTICS
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
C
NI
R
PULLUP
R
NWODLLUP
KLC4Fp
ecnaticapaCtupnI
rotsiseRpulluPtupnI 15KΩ
rotsiseRnwodlluPtupnI 15KΩ
LES_KLC,NE_KLC4Fp
8535AG-11 www.icst.com/products/hiperclocks.html REV. B JULY 27, 2001
2
Integrated
Circuit
Systems, Inc.
TABLE 3A. CONTROL INPUT FUNCTION TABLE
stupnIstuptuO
NE_KLCLES_KLCecruoSdetceleS3Qurht0Q3Qnurht0Qn
00 KLCWOL;delbasiDHGIH;delbasiD
01 2LATX,1LATXWOL;delbasiDHGIH;delbasiD
10 KLCdelbanEdelbanE
11 2LATX,1LATXdelbanEdelbanE
ICS8535-11
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
LVCMOS-TO-3.3V L VPECL FANOUT BUFFER
gnillafdnagnisiragniwollofdelbanerodelbasiderastuptuokcolceht,sehctiwsNE_KLCretfA
erugiF
ninwohssaegderotallicsolatsyrcrokcolctupni
.1
.B3elbaTnidebircsedsatupniKLCehtfonoitcnufaerastuptuoehtfoetatseht,edomevitcaehtnI
CLK
CLK_EN
nQ0 - nQ3
Q0 - Q3
TABLE 3B. CLOCK INPUT FUNCTION TABLE
stupnIstuptuO
KLC3Qurht0Q3Qnurht0Qn
0WOLHGIH
1HGIHWOL
EnabledDisabled
FIGURE 1 - CLK_EN TIMING DIAGRAM
8535AG-11 www.icst.com/products/hiperclocks.html REV. B JULY 27, 2001
3
Integrated
Circuit
Systems, Inc.
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
ICS8535-11
LVCMOS-TO-3.3V LVPECL FANOUT BUFFER
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
Inputs, V
I
Outputs, V
Package Thermal Impedance, θ
Storage T emperature, T
CCx
O
JA
STG
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 beyond those listed in the
DC Characteristics
or
AC Characteristics
ods may affect product reliability.
4.6V
-0.5V to VCC + 0.5V
-0.5V to VCC + 0.5V
73.2°C/W (0lfpm)
-65°C to 150°C
is not implied. Exposure to absolute maximum rating conditions for extended peri-
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, V
= 3.3V±5%, TA = 0°C TO 70°C
CC
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
CC
I
EE
egatloVylppuSrewoP531.33.3564.3V
tnerruCylppuSrewoP 05Am
TABLE 4B. LVCMOS / LVTTL DC CHARACTERISTICS, V
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
KLC2567.3V
V
HI
V
LI
I
HI
I
LI
egatloVhgiHtupnI
,NE_KLC
LES_KLC
KLC3.0-8.0V
egatloVwoLtupnI
,NE_KLC
LES_KLC
,KLC
tnerruChgiHtupnI
LES_KLC
NE_KLCV
,KLC
tnerruCwoLtupnI
LES_KLC
V
NE_KLCV
= 3.3V±5%, TA = 0°C TO 70°C
CC
V=
V
NI
CC
V=
NI
CC
V,V0=
NI
V,V0=
NI
V564.3=051Aµ
V564.3=5Aµ
CC
CC
V564.3=5-Aµ
V564.3=051-Aµ
2567.3V
3.0-8.0V
TABLE 4C. LVPECL DC CHARACTERISTICS, V
= 3.3V±5%, TA = 0°C TO 70°C
CC
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
HO
V
LO
V
GNIWS
8535AG-11 www.icst.com/products/hiperclocks.html REV. B JULY 27, 2001
1ETON;egatloVhgiHtuptuOV
1ETON;egatloVwoLtuptuOV
4.1-V
CC
-0.2V
CC
-0.1V
CC
-7.1V
CC
gniwSegatloVtuptuOkaeP-ot-kaeP6.058.0V
05htiwdetanimretstuptuO:1ETON Ω Vot
.V2-
CC
4
Integrated
Circuit
Systems, Inc.
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
ICS8535-11
LVCMOS-TO-3.3V L VPECL FANOUT BUFFER
TABLE 5. CRYSTAL CHARACTERISTICS
retemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
noitallicsOfoedoM latnemadnuF
ecnareloTycneuqerF 05-05mpp
ytilibatSycneuqerF 001-001mpp
leveLevirD 1.0Wm
)RSE(ecnatsiseRseireStnelaviuqE 0508
ecnaticapaCtnuhS 7Fp
ecnatcudnIniPseireS 37Hn
egnaRerutarepmeTgnitarepO 007C°
gnigAC°52@raeyreP5-5mpp
egnaRycneuqerF 4152zHM
Ω
TABLE 6. AC CHARACTERISTICS, V
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
t
DP
t
)o(ks5,2ETON;wekStuptuO 5253sp
t
)pp(ks5,3ETON;wekstraP-ot-traP 051sp
t
R
t
F
cdo4ETON;elcyCytuDtuptuO840525%
LOTcsoecnarelloTrotallicsOlatsyrC 0001mpp
=3.3V±5%, TA = 0°C TO 70°C
CC
ycneuqerFtuptuOmumixaM 662zHM
1ETON;yaleDnoitagaporP IJ zHM6620.14.2sn
emiTesiRtuptuOzHM05@%08ot%02003007sp
emiTllaFtuptuOzHM05@%08ot%02003007sp
.esiwrehtodetonsselnuzHM662taderusaemsretemarapllA
.rettijddatonseodtrapehT.tuptuoehtnorettijehtlauqelliwtupniehtnorettijelcyc-ot-elcycehT
.tniopgnissorctuptuolaitnereffidehtottupniehtfotniop%05ehtmorfderusaeM:1ETON
.snoitidnocdaollauqehtiwdnaegatlovylppusemasehttastuptuoneewtebwekssadenifeD:2ETON
.stniopssorclaitnereffidtuptuoehttaderusaeM
segatlovylppusemasehttagnitareposecivedtnereffidnostuptuoneewtebwekssadenifeD:3ETON
derusaemerastuptuoeht,ecivedhcaenostupnifoepytemasehtgnisU.snoitidnocdaollauqehtiwdna
.stniopssorclaitnereffidehtta
.etoNnoitacilppAotrefer,tupniLATXroF.tupniKLCgnisuderusaeM:4ETON
.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:5ETON
8535AG-11 www.icst.com/products/hiperclocks.html REV. B JULY 27, 2001
5
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