ICST ICS85357AG-11T, ICS85357AG-11 Datasheet
Integrated
Circuit
Systems, Inc.
ICS85357-11
4:1 OR 2:1, CR YSTA L OSCILLATOR-TO-3.3V
LVPECL / ECL M
UL TIPLEXER
GENERAL DESCRIPTION
,&6
HiPerClockS™
inputs. The device can support 10MHz - 25MHz parallel
resonant crystals by connecting external capacitors between
XTALIN/XTALOUT and ground. The select pins have
internal pulldown resistors and leaving one input
unconnected (pulled to logic low by the internal resistor) will
transform the device into a 2:1 multiplexer. The SEL1 lead is
the most significant line and the binary number applied to
the select pins will select the same numbered data input (i.e.,
00 selects XTALIN0/XT ALOUT0).
The ICS85357-11 is a 4:1 or 2:1, Crystal
Oscillator-to-3.3V LVPECL / ECL Multiplexer and
is a member of the HiPerClockS™ family of High
Performance Clock Solutions from ICS. The
ICS85357-11 has 4 selectable crystal
FEATURES
• 1 differential 3.3V LVPECL output
• 4:1 or 2:1 Crystal Oscillator Multiplexer
• Supports parallel resonant crystals with a frequency range
of 10MHz - 25MHz. The oscillator circuit is optimized for
parallel resonant mode, and will require external capacitance
• Maximum output frequency up to 25MHz
• LVCMOS SEL0 and SEL1 inputs have internal pulldown
resistors
• Part-to-part skew: 150ps (maximum)
• Propagation delay: 2ns (maximum)
• LVPECL mode operating voltage supply range:
= 3.135V to 3.465V , VEE = 0V
V
CC
• ECL mode operating voltage supply range:
= 0V , VEE = -3.135V to -3.465V
V
CC
• 0°C to 70°C ambient operating temperature
• Industrial temperature information available upon request
BLOCK DIAGRAM PIN ASSIGNMENT
VCC
XTALIN0
XTALOUT0
XTALIN0
XTALOUT0
XTALIN1
XTALOUT1
XTALIN2
XTALOUT2
XTALIN3
XTALOUT3
OSC
OSC
OSC
OSC
00
01
10
11
Q0
nQ0
SEL0SEL1
XTALIN1
XTALOUT1
XTALIN2
XTALOUT2
XTALIN3
XTALOUT3
V
EE
ICS85357-11
20-Lead TSSOP
4.40mm x 6.50mm x 0.92mm body package
20
1
19
2
18
3
17
4
16
5
15
6
14
7
13
8
12
9
11
10
G Package
T op View
V
CC
SEL1
SEL0
V
CC
Q0
nQ0
V
CC
nc
nc
V
EE
85357AG-11 www.icst.com/products/hiperclocks.html REV. A JULY 25, 2001
1
Integrated
Circuit
Systems, Inc.
TABLE 1. PIN DESCRIPTIONS
rebmuNemaNepyTnoitpircseD
02,71,41,1V
20NILATXtupnI.tupnilatsyrctnanoserlellaraP
30TUOLATXtupnI.tupnilatsyrctnanoserlellaraP
41NILATXtupnI.tupnilatsyrctnanoserlellaraP
51TUOLATXtupnI.tupnilatsyrctnanoserlellaraP
62NILATXtupnI.tupnilatsyrctnanoserlellaraP
72TUOLATXtupnI.tupnilatsyrctnanoserlellaraP
83NILATXtupnI.tupnilatsyrctnanoserlellaraP
93TUOLATXtupnI.tupnilatsyrctnanoserlellaraP
11,01V
31,21cndesunU.tcennocoN
61,510Q,0QntuptuO.slevelecafretniLCEPVL.stuptuokcolclaitnereffiD
810LEStupnInwodlluP.slevelecafretniLTTVL/SOMCVL.tupnitceleskcolC
911LEStupnInwodlluP.slevelecafretniLTTVL/SOMCVL.tupnitceleskcolC
pulluP
:ETON
CC
EE
dna
ICS85357-11
4:1 OR 2:1, CRYSTAL OSCILLATOR-TO-3.3V
LVPECL / ECL M
rewoP.V3.3ottcennoC.snipylppusevitisoP
rewoP.dnuorgottcennoC.snipylppusevitageN
nwodlluP
UL TIPLEXER
.seulavlacipytrof,scitsiretcarahCniP,2elbaTeeS.srotsisertupnilanretniotsrefer
TABLE 2. PIN CHARACTERISTICS
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
C
NI
R
PULLUP
R
NWODLLUP
ecnaticapaCtupnI1LES,0LES4Fp
rotsiseRpulluPtupnI 15KΩ
rotsiseRnwodlluPtupnI 15KΩ
TABLE 3A. CONTROL INPUT FUNCTION TABLE
stupnItuOkcolC
1LES0LESKLC
00 0TUOLATX,0NILATX
01 1TUOLATX,1NILATX
10 2TUOLATX,2NILATX
11 3TUOLATX,3NILATX
85357AG-11 www.icst.com/products/hiperclocks.html REV. A JULY 25, 2001
2
Integrated
Circuit
Systems, Inc.
4:1 OR 2:1, CR YSTAL OSCILLA TOR-TO-3.3V
LVPECL / ECL M
ICS85357-11
UL TIPLEXER
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
Inputs, V
I
Outputs, V
Package Thermal Impedance, θ
Storage T emperature, T
CC
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
egatloVylppuSevitisoP531.33.3564.3V
tnerruCylppuSrewoP 05Am
TABLE 4B. LVCMOS / LVTTL DC CHARACTERISTICS, V
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
HI
V
LI
I
HI
I
LI
TABLE 4C. LVPECL DC CHARACTERISTICS, V
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
HO
V
LO
V
GNIWS
egatloVhgiHtupnI1LES,0LES2567.3V
egatloVwoLtupnI1LES,0LES3.0-8.0V
tnerruChgiHtupnI1LES,0LESV
tnerruCwoLtupnI1LES,0LESVCCV,V564.3=
= 3.3V±5%, TA=0°C TO 70°C
CC
1ETON;egatloVhgiHtuptuOV
1ETON;egatloVwoLtuptuOV
gniwSegatloVtuptuOkaeP-ot-kaeP6.058.0V
05htiwdetanimretstuptuO:1ETON Ω Vot
.V2-
CC
= 3.3V±5%, TA = 0°C TO 70°C
CC
V=
CC
NI
V564.3=051Aµ
V0=5-Aµ
NI
CC
CC
4.1-V
0.2-V
0.1-V
CC
7.1-V
CC
85357AG-11 www.icst.com/products/hiperclocks.html REV. A JULY 25, 2001
3
Integrated
Circuit
Systems, Inc.
TABLE 5. CRYSTAL CHARACTERISTICS
retemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
tuc/noitallicsOfoedoM tnanoseRlellaraP/latnemadnuF
ycneuqerF 0152zHM
ecnaticapaCtnuhS 7Fp
ecnatcudnIniPseireS 37Hn
egnaRerutarepmeTgnitarepO 007C°
ICS85357-11
4:1 OR 2:1, CRYSTAL OSCILLATOR-TO-3.3V
LVPECL / ECL M
)RSE(ecnatsiseRseireStnelaviuqE 0508
UL TIPLEXER
Ω
TABLE 6. AC CHARACTERISTICS, V
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
t
DP
)pp(kst4,2ETON;wekStraP-ot-traP 051sp
t
R
t
F
cdo4,3ETON;elcyCytuDtuptuO 7435%
LOTcso3ETON;ecnareloTrotallicsOlatsyrC 02±mpp
.noitceSnoitacilppA
emiTesiRtuptuO%08ot%02003007sp
emiTllaFtuptuO%08ot%02003007sp
= 3.3V±5%, TA=0°C TO 70°C
CC
egnaRycneuqerFtuptuO 0152zHM
1ETON;yaleDnoitagaporP IJ zHM521 2sn
.esiwrehtodetonsselnuzHM52taderusaemsretemarapllA
.tniopgnissorctuptuolaitnereffidehtottniopgnissorctupnilaitnereffidehtmorfderusaeM:1ETON
.tupniLATXehtgnivirdrevoderusaeM
segatlovylppusemasehttagnitareposecivedtnereffidnostuptuoneewtebwekssadenifeD:2ETON
derusaemerastuptuoeht,ecivedhcaenostupnifoepytemasehtgnisU.snoitidnocdaollauqehtiwdna
.tupniLATXehtgnivirdrevoderusaeM.stniopssorclaitnereffidehtta
ehtni6erugiFotrefeR.slatsyrcFp81htiwlellarapniFp72=2CdnaFp22=1CgnisuderusaeM:3ETON
.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:4ETON
85357AG-11 www.icst.com/products/hiperclocks.html REV. A JULY 25, 2001
4
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