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8501BYLFT

P1-P3P4-P6P7-P9P10-P11
Integrated
Circuit
Systems, Inc.
ICS8501
LOW SKEW, 1-TO-16 DIFFERENTIAL CURRENT MODE
FANOUT BUFFER
8501BY www.icst.com/products/hiperclocks.html REV. B OCTOBER 3, 2003
1
FEATURES
• 16 small swing DCM outputs
• Translates any differential input signal (LVPECL, LVHSTL,
LVDS, DCM) to DCM levels without external bias networks
• Translates single ended input levels to DCM levels with a
resistor bias network on the nCLK input
• Translates single ended input levels to inverted DCM levels
with a resistor bias network on the CLK input
• Maximum output frequency: 500MHz
• Output skew: 100ps (maximum)
• Part-to-part skew: 650ps (maximum)
• V
OH
: 850mV (maximum)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
BLOCK DIAGRAM PIN ASSIGNMENT
48 47 46 45 44 43 42 41 40 39 38 37
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
VDD
Q11
nQ11
Q10
nQ10
GND
Q9
nQ9
Q8
nQ8
V
DD
nc
CLK
V
DD
nQ0
Q0
nQ1
Q1
GND
nQ2
Q2
nQ3
Q3
V
DD
nCLK
V
DD
Q15
nQ15
Q14
nQ14
GND
Q13
nQ13
Q12
nQ12
V
DD
ICS8501
RREF
V
DD
Q7
nQ7
Q6
nQ6
GND
Q5
nQ5
Q4
nQ4
V
DD
GENERAL DESCRIPTION
The ICS8501 is a low skew, 1-to-16 Differential
Current Mode Fanout Buffer and a member of
the HiPerClockS™ f amily of High Performance
Clock Solutions from ICS. The ICS8501 is de-
signed to translate any differential signal levels
to small swing differential current mode (DCM) output levels.
An external reference resistor is used to set the value of the
current supplied to an external load load/termination resistor.
The load resistor value is chosen to equal the value of the
characteristic line impedance of 50Ω. The ICS8501 is char-
acterized at an operating supply voltage of 3.3V.
The small swing outputs, accurate crossover voltage and duty
cycle makes the ICS8501 ideal for interfacing to today’s most
advanced microprocessors.
HiPerClockS™
ICS
CLK
nCLK
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
Q15
nQ15
Q14
nQ14
Q13
nQ13
Q12
nQ12
Q11
nQ11
Q10
nQ10
Q9
nQ9
Q8
nQ8
48-Lead LQFP
7mm x 7mm x 1.4mm body package
Y Package
Top View
Integrated
Circuit
Systems, Inc.
ICS8501
LOW SKEW, 1-TO-16 DIFFERENTIAL CURRENT MODE
FANOUT BUFFER
8501BY www.icst.com/products/hiperclocks.html REV. B OCTOBER 3, 2003
2
TABLE 1. PIN DESCRIPTIONS
TABLE 2. PIN CHARACTERISTICS
stupnIstuptuO
edoMtuptuOottupnIytiraloP
KLCKLCn51Q:0Q51Qn:0Qn
0101 laitnereffiDotlaitnereffiDgnitrevnInoN
1010 laitnereff
iDotlaitnereffiDgnitrevnInoN
01ETON;desaiB01 laitnereffiDotdednEelgniSgnitrevnInoN
11ETON;desaiB10 laitnereffiDotde
dnEelgniSgnitrevnInoN
1ETON;desaiB010 laitnereffiDotdednEelgniSgnitrevnI
1ETON;desaiB101 laitnereffiDotdednEelgniSgn
itrevnI
,noitceSnoitamrofnInoitacilppAehtotreferesaelP:1ETON
eveLdednEelgniStpeccAottupnIlaitnereffiDehtgniriW
.sl
TABLE 3. FUNCTION TABLE
rebmuNemaNepyTnoitpircseD
84,83,53,52,42,41,11,1V
DD
rewoP.snipylppusevitisoP
3,211Qn,11QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
5,
401Qn,01QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
34,03,91,6DNGrewoP.dnuorgylppu
srewoP
8,79Qn,9QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
01,98Qn,8QtuptuO.slevele
cafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
21cndesunU.tcennocoN
31FERRtupnI
.tnerructuptuoehtteso
tdesU.tupnitnerrucecnerefeR
574ottcennoC Ω .dnuorgotrotsiser
61,517Qn,7QtuptuO.slevelecafretniedomtnerruclai
tnereffiD.riaptuptuolaitnereffiD
81,716Qn,6QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolaitn
ereffiD
12,025Qn,5QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
32,224Qn,4QtuptuO.sle
velecafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
72,623Qn,3QtuptuO.slevelecafretniedomtnerrucla
itnereffiD.riaptuptuolaitnereffiD
92,822Qn,2QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolait
nereffiD
63KLCtupnI.tupnikcolclaitnereffidgnitrevninoN
73KLCntupnI.tupnikcolclaitnereffidgnitrevnI
04,9351Qn,51
QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
24,1441Qn,41QtuptuO.slevelecafretnied
omtnerruclaitnereffiD.riaptuptuolaitnereffiD
54,4431Qn,31QtuptuO.slevelecafretniedomtnerruclaitnereffiD.r
iaptuptuolaitnereffiD
74,6421Qn,21QtuptuO.slevelecafretniedomtnerruclaitnereffiD.riaptuptuolaitnereffiD
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
C
NI
ecnaticapaCtupnI 2Fp
C
DP
ecnaticapaCnoitapissiDrewoP
)tuptuorep(
V
DD
zHM052=f,V564.3=6.4Fp
R
TUO
ecnadepmItuptuO 41KW
Integrated
Circuit
Systems, Inc.
ICS8501
LOW SKEW, 1-TO-16 DIFFERENTIAL CURRENT MODE
FANOUT BUFFER
8501BY www.icst.com/products/hiperclocks.html REV. B OCTOBER 3, 2003
3
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
DD
4.6V
Inputs, V
I
-0.5V to V
DD
+ 0.5 V
Outputs, V
O
-0.5V to V
DD
+ 0.5V
Package Thermal Impedance, θ
JA
47.9°C/W (0 lfpm)
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 4B. DIFFERENTIAL DC CHARACTERISTICS, V
DD
= 3.3V±5%, TA = 0°C TO 70°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
I
HI
tnerruChgiHtupnIKLCn,KLCV
DD
V=
NI
V564.3=5Aµ
I
LI
tnerruCwoLtupnIKLCn,KLCV
DD
V,V564.3=
NI
V0=5Aµ
V
PP
egatloVtupnIkaeP-ot-kaeP 13.03.1V
V
RMC
;egatloVtupnIedoMnommoC
2,1ETON
sleveLLCEPVL8.14.2V
sleveLLTSS,SDVL,LTSH,MCD13.03.1V
Vsadenifedsiegatlovedomnom
moC:1ETON
HI
.
VsiKLCn,KLCrofegatlovtupnimumixameht,snoitacilppadedneelgnisroF:2ETON
DD
.V3.0+
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, V
DD
= 3.3V±5%, TA = 0°C TO 70°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
V
DD
egatloVylppuSevitisoP 531.33.3564.3V
I
DD
tnerruCylppuSrewoP 07Am
TABLE 4C. HCSL DC CHARACTERISTICS, V
DD
= 3.3V±5%, TA = 0°C TO 70°C
lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU
I
HO
1ETON;tnerruChgiHtuptuO531.3 ≤ V
DD
≤ V564.3114171Am
V
HO
2ETON;egatloVhgiHtuptuO574=FERR Ω 05-DAOLR, Ω 006017058Vm
V
LO
2ETON;egatloVwoLtuptuO574=FERR Ω 05-DAOLR, Ω 050.0V
V
XO
3ETON;egatloVrevossorCtuptuO 0406%
I:1ETON
HO
tnerrucylppuslatotehtnidedulcniebdluohsdnadaolehtotdeilppusgniebtuptuoreptnerrucehtsi
I,eroferehT.noit
aluclac
DD
Iotlauqesi)latot(
HO
I+61*
DD
.
05htiwdetanimretstuptuO:2ETON Ω Vot
DD
.V2-
.noitidnocnevigatagniwsegatlovtuptuoottcepserhtiwenifeD:3ETON
P1-P3P4-P6P7-P9P10-P11

8501BYLFT

Mfr. #:
Buy 8501BYLFT
Manufacturer:
IDT
Description:
Clock Drivers & Distribution 16 HCSL OUT BUFFER
Lifecycle:
New from this manufacturer.
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