83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
1
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
GENERAL DESCRIPTION
The ICS83905I is a low skew, 1-to-6 LVCMOS /
LVTTL Fanout Buffer and a member of the
HiPerClockS™ family of High Performance Clock
Solutions from ICS. The ICS83905I single ended
clock input accepts LVCMOS or LVTTL input lev-
els. The low impedance LVCMOS/LVTTL outputs are designed
to drive 50Ω series or parallel terminated transmission lines.
The effective fanout can be increased from 6 to 12 by utilizing
the ability of the outputs to drive two series terminated lines.
The ICS83905I is characterized at full 3.3V, 2.5V, and 1.8V, mixed
3.3V/2.5V, 3.3V/1.8V and 2.5V/1.8V output operating supply
mode. Guaranteed output and part-to-part skew characteris-
tics along with the 1.8V output capabilities makes the
ICS83905I ideal for high performance, single ended applica-
tions that also require a limited output voltage.
BLOCK DIAGRAM PIN ASSIGNMENT
FEATURES
•6 LVCMOS / LVTTL outputs
•Crystal oscillator interface
•Output frequency range: 10MHz to 50MHz
•Crystal input frequency range: 10MHz to 50MHz
•Output skew: 10ps (typical)
•5V tolerant enable inputs
•Synchronous output enables
•Operating supply modes: Full 3.3V, 2.5V and 1.8V,
mixed 3.3Vcore/2.5V or1.8V operating supply, and
mixed 2.5V core/1.8V operating supply
•-40°C to 85°C ambient operating temperature
•Pin compatible to MPC905
HiPerClockS™
ICS
ICS83905I
16-Lead SOIC
3.9mm x 9.9mm x 1.38mm body package
M Pacakge
Top View
ICS83905I
16-Lead TSSOP
4.4mm x 3.0mm x 0.92mm body package
G Pacakge
Top View
SYNCHRONIZE
SYNCHRONIZE
BCLK0
BCLK1
BCLK2
BCLK3
BCLK4
BCLK5
ENABLE 1
ENABLE 2
XTAL_IN
XTAL_OUT
XTAL_OUT
ENABLE 2
GND
BCLK0
VDDo
BCLK1
GND
BCLK2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XTAL_IN
ENABLE 1
BCLK5
VDDO
BCLK4
GND
BCLK3
VDD
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.
20 19 18 17 16
6 7 8 9 10
1
2
3
4
5
15
14
13
12
11
ENABLE2
XTAL_OUT
XTAL_IN
ENABLE1
nc
BCLK5
VDDO
BCLK4
GND
GND
GND
GND
BCLK0
VDDO
BCLK1
GND
GND
BCLK2
VDD
BCLK3
ICS83905I
20-Lead VFQFN
4mm x 4mm x 0.9mm
body package
K Package
Top View
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
2
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
TABLE 1. PIN DESCRIPTIONS
TABLE 2. PIN CHARACTERISTICS
TABLE 3. OUTPUT ENABLE AND CLOCK ENABLE FUNCTION TABLE
emaNepyTnoitpircseD
TUO_LATXtuptuO.tuptuoehtsiTUO_LATX.ecafretnirotallicsolatsyrC
NI_LATXtupnI.tupniehtsiNI_L
ATX.ecafretnirotallicsolatsyrC
2ELBANE,1ELBANEtupnI.slevelecafretniLTTVL/SOMCVL.elbanetuptuO
,2KLCB,1KLCB
,0KLCB
5KLCB,4KLCB,3KLCB tuptuO.slevelecafretniLTTVL/SOMCVL.stuptuokcolC
DNGrewoP.dnuorgylppusrewoP
V
DD
rewoP.nipylppuseroC
V
ODD
rewoP.nipylppustuptuO
c/ndesunU.tcennocoN
stupnIlortnoCstuptuO
1ELBANE2ELBANE4KLCB:0KLCB5KLCB
00 WOLWOL
01 WOLgnilggoT
10 gnilggoTWOL
11 gnilggoTgnilggoT
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
C
NI
ecnaticapaCtupnI 4Fp
C
DP
ecnaticapaCnoitapissiDrewoP
)tuptuorep(
V
ODD
V564.3=91Fp
V
ODD
V526.2=81Fp
V
ODD
V2=61Fp
R
TUO
ecnadepmItuptuO
V
ODD
%5±V3.3=5721Ω
V
ODD
%5±V5.2=7
Ω
V
ODD
V2.0±V8.1=01Ω
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
3
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 3.3V±5%, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSeroC 531.33.3564.3V
V
ODD
egatloVylppuStuptuO 531.33.3564.3V
I
DD
tnerruCylppuSrewoP DBTAµ
I
ODD
tnerruCylppuStuptuO DBTAµ
TABLE 4B. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 2.5V±5%, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSeroC 573.25.2526.2V
V
ODD
egatloVylppuStuptuO 573.25.2526.2V
I
DD
tnerruCylppuSrewoP DBTAµ
I
ODD
tnerruCylppuStuptuO DBTAµ
TABLE 4C. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSeroC 6.18.10.2V
V
ODD
egatloVylppuStuptuO 6.18.10.2V
I
DD
tnerruCylppuSrewoP DBTAµ
I
ODD
tnerruCylppuStuptuO DBTAµ
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
DD 4.6V
Inputs, VI-0.5V to VDD + 0.5 V
Outputs, VO-0.5V to VDDO + 0.5V
Package Thermal Impedance, θ
JA
16 Lead SOIC package 78.8°C/W (0 mps)
16 Lead TSSOP package 89°C/W (0 lfpm)
20 Lead VFQFN package 38.5°C/W (0 mps)
Storage Temperature, T
STG -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 4D. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 2.5V±5%, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSeroC 531.33.3564.3V
V
ODD
egatloVylppuStuptuO 573.25.2526.2V
I
DD
tnerruCylppuSrewoP DBTAµ
I
ODD
tnerruCylppuStuptuO DBTAµ
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
4
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
TABLE 4G. LVCMOS/LVTTL DC CHARACTERISTICS, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
HI
egatloVhgiHtupnI ,1ELBANE
2ELBANE
V
DD
%5±V3.3=2V
DD
3.0+V
V
DD
%5±V5.2=7.1V
DD
3.0+V
V
DD
V2.0±V8.1=V*56.0
DD
V
DD
3.0+V
V
LI
egatloVwoLtupnI ,1ELBANE
2ELBANE
V
DD
%5±V3.3=3.0-3.1V
V
DD
%5±V5.2=3.0-7.0V
V
DD
V2.0±V8.1=3.0-V*53.0
DD
V
V
HO
hgiHtuptuOegatloV
V
ODD
1ETON;%5±V3.3=6.2V
V
ODD
I;%5±V5.2=
HO
Am1-=2 V
V
ODD
1ETON;%5±V5.2=8.1V
V
ODD
1ETON;V2.0±V8.1=V
DD
3.0-V
V
LO
egatloVwoLtuptuO
V
ODD
1ETON;%5±V3.3=5.0V
V
ODD
I;%5±V5.2=
LO
Am1=4.0V
V
ODD
1ETON;%5±V5.2=54.0V
V
ODD
1ETON;V2.0±V8.1=53.0V
05htiwdetanimretstuptuO:1ETON ΩVot
ODD
.smargaid"tiucriCtseTdaoL",noitcestnemerusaeMretemaraPeeS.2/
TABLE 4E. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSeroC 531.33.3564.3V
V
ODD
egatloVylppuStuptuO 6.18.10.2V
I
DD
tnerruCylppuSrewoP DBTAµ
I
ODD
tnerruCylppuStuptuO DBTAµ
TABLE 4F. POWER SUPPLY DC CHARACTERISTICS, VDD = 2.5V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSeroC 573.25.2526.2V
V
ODD
egatloVylppuStuptuO 6.18.10.2V
I
DD
tnerruCylppuSrewoP DBTAµ
I
ODD
tnerruCylppuStuptuO DBTAµ
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
5
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
TABLE 5A. AC CHARACTERISTICS, VDD = VDDO = 3.3V±5%, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
ycneuqerFtuptuO latsyrClanretxEgnisU0105zHM
ecruoSkcolClanretxEgnisUCD001zHM
t
WP
htdiWesluPtuptuO
1ETON;)V2evoba(HGIH
sdoireP=T
T5.0
2ETON,)V8.0woleb(WOLT5.0
1ETON;)V2evoba(HGIHT5.0
2ETON,)V8.0woleb(WOLT5.0
t
REP
doirePtuptuOdoirePderised=TDBT
t
)o(ks5,3ETON;wekStuptuO 01sp
t
R
/t
F
emiTllaF/esiRtuptuO%08ot%02005sp
t
NE
;emiTelbanEtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
t
SID
;emiTelbasiDtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
A
CSO
niaGrotallicsOTUO_LATXotNI_LATX DBTbd
esahP+°063oludoMtfihSesahPpooL DBT°
ftaderusaemsretemarapllA
XAM
.esiwrehtodetonsselnu
.temeraelbatsnotidnoCgnitarepOdednemmoceRmorfscepselcycytudtupnignimussA:1ETON
.d
esusiecnereferlanretxeelcycytud%05rolatsyrclanretxegnimussA:2ETON
VtaderusaeM.snoitidnocdaollauqehtiwd
naegatlovylppusemasehttastuptuoneewtebwekssadenifeD:3ETON
ODD
.2/
.noitcudorpnidetsettoN.noitaziretcarahcybdeetnaraugerasretemarapesehT:4ETON
.56dradnatSCEDEJhtiwecn
adroccanidenifedsiretemarapsihT:5ETON
TABLE 5B. AC CHARACTERISTICS, VDD = VDDO = 2.5V±5%, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
ycneuqerFtuptuO latsyrClanretxEgnisU0105zHM
ecruoSkcolClanretxEgnisUCD001zHM
cdoelcyCytuDtuptuO 05%
t
REP
doirePtuptuO DBT
t
)o(ks5,3ETON;wekStuptuO 01sp
t
R
/t
F
emiTllaF/esiRtuptuO%08ot%02005sp
t
NE
;emiTelbanEtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
t
SID
;emiTelbasiDtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
A
CSO
niaGrotallicsOTUO_LATXotNI_LATX DBTbd
esahP+°063oludoMtfihSesahPpooL DBT°
.A5elbaTmorfsetoneeS
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
6
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
TABLE 5D. AC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 2.5V±5%, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
ycneuqerFtuptuO latsyrClanretxEgnisU0105zHM
ecruoSkcolClanretxEgnisUCD001zHM
cdoelcyCytuDtuptuO 05%
t
REP
doirePtuptuO DBT
t
)o(ks5,3ETON;wekStuptuO 01sp
t
R
/t
F
emiTllaF/esiRtuptuO%08ot%02005sp
t
NE
;emiTelbanEtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
t
SID
;emiTelbasiDtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
A
CSO
niaGrotallicsOTUO_LATXotNI_LATX DBTbd
esahP+°063oludoMtfihSesahPpooL DBT°
.A5elbaTmorfsetoneeS
TABLE 5C. AC CHARACTERISTICS, VDD = VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
ycneuqerFtuptuO latsyrClanretxEgnisU0105zHM
ecruoSkcolClanretxEgnisUCD001zHM
cdoelcyCytuDtuptuO 05%
t
REP
doirePtuptuO DBT
t
)o(ks5,3ETON;wekStuptuO 01sp
t
R
/t
F
emiTllaF/esiRtuptuO%08ot%02055sp
t
NE
;emiTelbanEtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
t
SID
;emiTelbasiDtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
A
CSO
niaGrotallicsOTUO_LATXotNI_LATX DBTbd
esahP+°063oludoMtfihSesahPpooL DBT°
.A5elbaTmorfsetoneeS
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
7
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
ycneuqerFtuptuO latsyrClanretxEgnisU0105zHM
ecruoSkcolClanretxEgnisUCD001zHM
t
WP
htdiWesluPtuptuO 05%
t
REP
doirePtuptuO DBT
t
)o(ks5,3ETON;wekStuptuO 01sp
t
R
/t
F
emiTllaF/esiRtuptuO%08ot%02055sp
t
NE
;emiTelbanEtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
t
SID
;emiTelbasiDtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
A
CSO
niaGrotallicsOTUO_LATXotNI_LATX DBTbd
esahP+°063oludoMtfihSesahPpooL DBT°
.A5elbaTmorfsetoneeS
TABLE 5E. AC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
TABLE 5F. AC CHARACTERISTICS, VDD = 2.5V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
f
XAM
ycneuqerFtuptuO latsyrClanretxEgnisU0105zHM
ecruoSkcolClanretxEgnisUCD001zHM
cdoelcyCytuDtuptuO 05%
t
REP
doirePtuptuO DBT
t
)o(ks5,3ETON;wekStuptuO 01sp
t
R
/t
F
emiTllaF/esiRtuptuO%08ot%02055sp
t
NE
;emiTelbanEtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
t
SID
;emiTelbasiDtuptuO
4ETON
1ELBANEDBTsm
2ELBANEDBTsm
A
CSO
niaGrotallicsOTUO_LATXotNI_LATX DBTbd
esahP+°063oludoMtfihSesahPpooL DBT°
.A5elbaTmorfsetoneeS
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
8
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
PARAMETER MEASUREMENT INFORMATION
SCOPE
Qx
LVCMOS
1.8V CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT
2.4±0.9V
VDDO
-0.9V±0.1V
VDD
0.9V±0.1V
SCOPE
Qx
LVCMOS
2.5V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT
2.05V±5%
VDDO
-1.25V±5%
VDD
1.25V±5%
3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT
SCOPE
Qx
LVCMOS
1.65V±5%
-1.165V±5%
3.3V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT
3.3V CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT 2.5 CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT
SCOPE
Qx
LVCMOS
1.25V±5%
-1.25V±5%
SCOPE
Qx
LVCMOS
0.9V±0.1V
-0.9V ± 0.1V
SCOPE
Qx
LVCMOS
1.6V±0.025%
VDDO
-0.9V±0.1V
VDD
0.9V±0.1V
VDD,
VDDO
GND
VDD,
VDDO
GND
VDD,
VDDO
GND
GND GND
GND
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
9
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
Clock
Outputs
20%
80% 80%
20%
t
R
t
F
Pulse Width
tPERIOD
t
PW
t
PERIOD
odc =
V
DD
2
BCLKx
OUTPUT RISE/FALL TIME
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIODOUTPUT SKEW
t
sk(o)
V
DDO
2
V
DDO
2
Qy
Qx
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
10
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
APPLICATION INFORMATION
CRYSTAL INPUT INTERFACE, FUNDAMENTAL
Figure 1A
shows an example of ICS83905I crystal interface with
parallel resonance crystal using fundamental frequency. The C1,
C2 and R1 values are suggested for the best frequency accu-
R1
100
X1
XTA L_ I N
XTA L_OU T
C2
16p
C1
10p
XTAL_IN
XTAL_OUT
C1
10p
L1
X1
C2
16p
C3
CRYSTAL INPUT INTERFACE, 3
RD
OVERTONE
Figure 1B
shows an example of ICS83905I crystal interface with
parallel resonance crystal using 3rd overtone frequency. The C1,
C2 values are suggested for the best frequency accuracy ppm.
racy ppm. The optimum C1 and C2 values can be adjusted to
improve the frequency accuracy for stray capacitance of differ-
ent board layout.
FIGURE 1A. CRYSTAL OSCILLATOR INTERFACE, (FUNDAMENTAL)
The optimum C1 and C2 values can be adjusted to improve the
frequency accuracy for stray capacitance of different board lay-
out. The C3 and L1 can be calculated from the given equation.
FIGURE 1B. CRYSTAL OSCILLATOR INTERFACE (3
RD
OVERTONE)
3*12
1
_CL
fundF
π
=
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
11
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
RELIABILITY INFORMATION
TRANSISTOR COUNT
The transistor count for ICS83905I is: 339
TABLE 6B. θJAVS. AIR FLOW TABLE FOR 16 LEAD TSSOP
θθ
θθ
θJA by Velocity (Linear Feet per Minute)
0 200 500
Single-Layer PCB, JEDEC Standard Test Boards 137.1°C/W 118.2°C/W 106.8°C/W
Multi-Layer PCB, JEDEC Standard Test Boards 89.0°C/W 81.8°C/W 78.1°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
TABLE 6A. θJAVS. AIR FLOW TABLE FOR 16 LEAD SOIC
θθ
θθ
θJA by Velocity (Meters per Second)
012
Multi-Layer PCB, JEDEC Standard Test Boards 78.8°C/W 71.1°C/W 66.2°C/W
TABLE 6C. θJAVS. AIR FLOW TABLE FOR 20 LEAD VFQFN
θθ
θθ
θJA by Velocity (Meters per Second)
0 1 2.5
Single-Layer PCB, JEDEC Standard Test Boards 141.7°C/W 126°C/W 116.9°C/W
Multi-Layer PCB, JEDEC Standard Test Boards 38.5°C/W 35°C/W 33.4°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
12
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
PACKAGE OUTLINE - G SUFFIX FOR 16 LEAD TSSOP
Reference Document: JEDEC Publication 95, MO-153
LOBMYS sretemilliM
muminiMmumixaM
N61
A--02.1
1A50.051.0
2A08.050.1
b91.003.0
c90.002.0
D09.401.5
ECISAB04.6
1E03.405.4
eCISAB56.0
L5
4.057.0
α°0°8
aaa--01.0
PACKAGE OUTLINE - M SUFFIX FOR 16 LEAD SOIC
TABLE 7A. PACKAGE DIMENSIONS FOR 16 LEAD DOIC
Reference Document: JEDEC Publication 95, MS-012
LOBMYS sretemilliM
MUMINIMMUMIXAM
N61
A53.157.1
1A01.052.0
B33.015.0
C91.052.0
D08.900.01
E08.300.4
eCISAB72.1
H08.502.6
h52.005.0
L04
.072.1
α°0°8
TABLE 7B. PACKAGE DIMENSIONS FOR TSSOP
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
13
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL FANOUT BUFFER
PRELIMINARY
TABLE 7C. PACKAGE DIMENSIONS FOR 20 LEAD VFQFN
PACKAGE OUTLINE - K SUFFIX FOR 20 LEAD VFQFN
NOITAIRAVCEDEJ
SRETEMILLIMNISNOISNEMIDLLA
LOBMYSMUMINIMMUMIXAM
N02
A08.00.1
1A 050.0
3A ecnerefeR52.0
b81.003.0
eCIS
AB05.0
N
D
5
N
E
5
D0.4
2D 57.008.2
E0.4
2E 57.008.2
L53.057.0
Reference Document: JEDEC Publication 95, MO-220
83905AMI http://www.icst.com/products/hiperclocks.html REV. B JUNE 11, 2004
14
Integrated
Circuit
Systems, Inc.
ICS83905I
LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-
LVCMOS / LVTTL 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 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.
rebmuNredrO/traPgnikraMegakcaPtnuoCerutarepmeT
MA50938SCIMA50938SCICIOSdaeL61ebutrep84C°58otC°04-
TMA50938SCIMA5
0938SCIleeRdnaepaTnoCIOSdaeL610052C°58otC°04-
GA50938SCIGA50938SCIPOSSTdaeL61ebutrep49C°58otC°04-
TGA50938SCIGA
50938SCIleeRdnaepaTnoPOSSTdaeL610052C°58otC°04-
KA50938SCIKA50938SCINFQFVdaeL02094C°58otC°04-
TKA50938SCIKA5093
8SCIleeRdnaepaTnoNFQFVdaeL020052C°58otC°04-
The aforementioned trademark, HiPerClockS™ is a trademark of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries.
