ICS8543BGLFT - Integrated Device Technology

ICS8543BG www.icst.com/products/hiperclocks.html REV. C MAY 21, 2001

Integrated

Circuit

Systems, Inc.

ICS8543

LOW SKEW, 1-TO-4

LVDS FANOUT BUFFER

PRELIMINARY

GENERAL DESCRIPTION

The ICS8543 is a low skew , high performance

1-to-4 clock fanout buffer and a member of

the HiPerClockS™ family of High Performance

Clock Solutions from ICS. Utilizing Low V oltage

Differential Signaling (LVDS) the ICS8543

provides a low power , low noise, solution for distributing clock

signals over controlled impedances of 100Ω. The ICS8543

accepts any differential input level and translates it to 3.3V

L VDS output levels.

Guaranteed output and part-to-part skew characteristics

make the ICS8543 ideal for those applications demanding

well defined performance and repeatability .

FEATURES

•4 L VDS outputs

•Designed to meet or exceed the requirements of ANSI

TIA/EIA-644

•Selectable differential HSTL or L VPECL clock inputs

• L VCMOS / L VTTL control inputs

•3.3V operating supply

•20 lead TSSOP

•0°C to 70°C ambient operating temperature

BLOCK DIAGRAM PIN ASSIGNMENT

ICS8543

20-Lead TSSOP

G Package

Top View

VEE

CLK_EN

CLK_SEL

HCLK

nHCLK

PCLK

nPCLK

VEE

VDD

nQ0

VDD

nQ1

nQ2

VEE

nQ3

HiPerClockS™

,&6

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.

HCLK

nHCLK

PCLK

nPCLK

nQ0

nQ1

nQ2

nQ3

CLK_EN

CLK_SEL

nD Q

ICS8543BG www.icst.com/products/hiperclocks.html REV. C MAY 21, 2001

Integrated

Circuit

Systems, Inc.

ICS8543

LOW SKEW, 1-TO-4

LVDS FANOUT BUFFER

PRELIMINARY

TABLE 2. PIN CHARACTERISTICS

TABLE 1. PIN DESCRIPTIONS

rebmuNemaNepyTnoitpircseD

31,9,1EEVrewoP.dnuorgottcennoC.dnuorgylppusrewoP

2NE_KLCtupnIpulluP kcolcswollofstuptuokcolcHGIHnehW.elbanekcolcsuonorhcnyS .hgihecroferastuptuoQn,wolecroferastuptuoQ,WOLnehW.tupni .slevelecafretniLTTVL/SOMCVL

3LES_KLCtupnInwodlluP .stupniLCEPlaitnereffidstcelesHGIHnehW.tupnitceleskcolC .stupniLTSHlaitnereffidstcelesWOLnehW .slevelecafretniLTTVL/SOMCVL

4KLCHtupnInwodlluP.tupnikcolcLTSHlaitnereffidgnitrevni-noN

5KLCHntupnIpulluP.tupnikcolcLTSHlaitnereffidgnitrevnI

6KLCPtupnInwodlluP.tupnikcolcLCEPlaitnereffidgnitrevni-noN

7KLCPntupnIpulluP.tupnikcolcLCEPlaitnereffidgnitrevnI

8EOtupnIpulluP 0Qn,0QstuptuofognilbasiddnagnilbaneslortnoC.elbanetuptuO 3Qn,3Qurht

81,01DDVrewoP.V3.3ottcennoC.nipylppusrewoP

21,113Q,3QntuptuO.slevelecafretniSDVL.stuptuokcolclaitnereffiD

51,412Q,2QntuptuO.slevelecafretniSDVL.stuptuokcolclaitnereffiD

71,611Q,1QntuptuO.slevelecafretniSDVL.stuptuokcolclaitnereffiD

02,910Q,0QntuptuO.slevelecafretniSDVL.stuptuokcolclaitnereffiD

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

NICecnaticapaCtupnI

KLCHn,KLCH4Fp

KCLPn,KLCP4Fp

,NE_KLC LES_KLC 4Fp

PULLUPRrotsiseRpulluPtupnI 15KΩ

NWODLLUPRrotsiseRnwodlluPtupnI 15KΩ

ICS8543BG www.icst.com/products/hiperclocks.html REV. C MAY 21, 2001

Integrated

Circuit

Systems, Inc.

ICS8543

LOW SKEW, 1-TO-4

LVDS FANOUT BUFFER

PRELIMINARY

TABLE 3B. CLOCK INPUTS FUNCTION TABLE

TABLE 3A. CONTROL INPUTS FUNCTION TABLE

stupnIstuptuO

EONE_KLCLES_KLC3Qurht1Q3Qnurht1Qn

0XX ZiHZiH

100 woLhgiH

10 1 woLhgiH

110 EVITCAEVITCA

111 EVITCAEVITCA nidebircsedsastupniKLCPn,KLCPdnaKLCHn,KLCHehtfonoitcnufasituptuoehtfoetatsehtedomevitcaehtnI .B3elbaT

stupnIstuptuO edoMtuptuOottupnIytiraloP

KLCP,KLCHKLCPn,KLCHn3Qurht0Q3Qnurht0Qn

01 WOLHGIHlaitnereffiDotlaitnereffiDgnitrevnInoN

10 HGIHWOLlaitnereffiDotlaitnereffiDgnitrevnInoN

01ETON;desaiBWOLHGIHlaitnereffiDotdednEelgniSgnitrevnInoN

11ETON;desaiBHGIHWOLlaitnereffiDotdednEelgniSgnitrevnInoN

1ETON;desaiB0HGIHWOLlaitnereffiDotdednEelgniSgnitrevnI

1ETON;desaiB1WOLHGIHlaitnereffiDotdednEelgniSgnitrevnI ehtstestupnidesaibehttaegatlovehT.desaibebstupnilaitnereffidehtfoenotahtseriuqeresudedneelgniS:1ETON otrotsiserasikrowtensaibtupnidednemmocerehtslevelLTTVLdnaSOMCVLroF.tupnidedneelgnisehtroftniophctiws 1.0adnadnuorgoteulavlauqeforotsisera,CCV µsitniophctiwsgnitluserehT.dnuorgottupniehtmorfroticapacF

.Vm003±2/CCVyletamixorppa

ICS8543BG www.icst.com/products/hiperclocks.html REV. C MAY 21, 2001

Integrated

Circuit

Systems, Inc.

ICS8543

LOW SKEW, 1-TO-4

LVDS FANOUT BUFFER

PRELIMINARY

ABSOLUTE MAXIMUM RATINGS

Supply V oltage 4.6V

Inputs -0.5V to VDD + 0.5V

Outputs -0.5V to VDD + 0.5V

Ambient Operating Temperature 0°C to 70°C

Storage Temperature -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 product at these condition or any conditions beyond

those listed in the

Characteristics

AC Characteristics

is not implied. Exposure to absolute maximum rating conditions

for extended periods may affect product reliability.

TABLE 4B. LVPECL DC CHARACTERISTICS, VDD = 3.3V±5%, TA=0°C TO 70°C

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

HIItnerruChgiHtupnI KLCP 051Aµ

KLCPn 5Aµ

LIItnerruCwoLtupnI KLCP5-Aµ

KLCPn051-Aµ

PPVegatloVtupnIkaeP-ot-kaeP 51.03.1V

RMCV1ETON;egatloVtupnIedoMnommoC 5.13.3V

.HIVmuminimehtsadenifedsiLCEPVLrofegatlovedomnommoC:1ETON

TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V±5%, TA=0°C TO 70°C

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

DDVegatloVylppuSrewoP531.33.3564.3V

EEItnerruCylppuSrewoP 05Am

TABLE 4C. LVHSTL DC CHARACTERISTICS, VDD = 3.3V±5%, TA=0°C TO 70°C

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

HIItnerruChgiHtupnI KLCHV531.3 ≤IDDV ≤V564.3051Aµ

KLCHnV531.3 ≤IDDV ≤V564.35Aµ

LIItnerruCwoLtupnI KLCHV531.3 ≤IDDV ≤V564.35-Aµ

KLCHnV531.3 ≤IDDV ≤V564.3051-Aµ

PPVegatloVtupnIkaeP-ot-kaeP 51.03.1V

RMCV1ETON;egatloVtupnIedoMnommoC 5.058.0-DDVV

dnaSDVL,MCDhtiwelbitapmocsiRMCV.egatlovrevossorcehtsadenifedsiLTSHrofegatlovedomnommoC:1ETON .stupniLTSS

ICS8543BG www.icst.com/products/hiperclocks.html REV. C MAY 21, 2001

Integrated

Circuit

Systems, Inc.

ICS8543

LOW SKEW, 1-TO-4

LVDS FANOUT BUFFER

PRELIMINARY

TABLE 5. AC CHARACTERISTICS, VDD = 3.3V±5%, TA=0°C TO 70°C

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

XAMfycneuqerFtupnImumixaM 056zHM

HLpthgiH-ot-woL,yaleDnoitagaporP0≤f≤zHM0568.14.2sn

)o(kst2ETON;wekStuptuO 05sp

)pp(kst3ETON;wekStraP-ot-traP 003sp

RtemiTesiRtuptuOR

001= Ω002004006sp

FtemiTllaFtuptuOR

001= Ω002004006sp

WPthtdiWesluPtuptuODBT-2/ELCYCtDBT+2/ELCYCtsn

NEtemiTelbanEtuptuO DBTsn

SIDtemiTelbasiDtuptuO DBTsn

.esiwrehtodetonsselnuXAMftaderusaemsretemarapllA:1ETON .snoitidnocdaollauqehtiwdnasegatlovylppusemasehttastuptuossorcawekssadenifeD:2ETON .tniopgnissorctuptuolaitnereffidehtottupniehtfotniop%05ehtmorfderusaeM segatlovylppusemasehttagnitareposecivedtnereffidnostuptuotnereffidtawekssadenifeD:3ETON .tniopgnissorctuptuolaitnereffidehtotstupniekilfo%05morfderusaeM.snoitidnocdaollauqehtiwdna

TABLE 4D. LVCMOS / LVTTL DC CHARACTERISTICS, VDD = 3.3V±5%, TA=0°C TO 70°C

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

HIVegatloVhgiHtupnIEO,LES_KLC,NE_KLC2V

LIVegatloVwoLtupnIEO,LES_KLC,NE_KLC 8.0V

HIItnerruChgiHtupnI EO,NE_KLC 5Aµ

LES_KLC 051Aµ

LIItnerruCwoLtupnI EO,NE_KLC051-Aµ

LES_KLC5-Aµ

TABLE 4E. LVDS DC CHARACTERISTICS, VDD = 3.3V±5%, TA=0°C TO 70°C

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

DOVegatloVtuptuOlaitnereffiD052053054Vm

∆DOV egnahCedutingaMDOV 453Vm

SOVegatloVtesffO521.152.1573.1V

∆SOV egnahCedutingaMSOV 552Vm

ZOItnerruCegakaeLecnadepmIhgiH01-1±01+Aµ

FFOIegakaeLffOrewoP02-1±02+Aµ

DSOItnerruCtiucriCtrohStuptuOlaitnereffiD 0.3Am

SOItnerruCtiucriCtrohStuptuO 0.3Am

ICS8543BG www.icst.com/products/hiperclocks.html REV. C MAY 21, 2001

Integrated

Circuit

Systems, Inc.

ICS8543

LOW SKEW, 1-TO-4

LVDS FANOUT BUFFER

PRELIMINARY

PACKAGE OUTLINE - G SUFFIX

TABLE 6. PACKAGE DIMENSIONS

Reference Document: JEDEC Publication 95, MO-153

LOBMYS sretemilliMsehcnI

NIMXAMNIMXAM

N02

A--02.1--740.0

1A50.051.0200.0600.0

2A08.050.1230.0140.0

b91.003.0700.0210.0

c90.002.05300.0800.0

D04.606.6252.0062.0

ECISAB04.6CISAB252.0

1E03.405.4961.0771.0

eCISAB56.0CISAB6520.0

L54.057.0810.0030.0

α°0°8°0°8

aaa--01.0--400.0

E1 E

aaa C

SEATING

PLANE

-C-

1120

ICS8543BG www.icst.com/products/hiperclocks.html REV. C MAY 21, 2001

Integrated

Circuit

Systems, Inc.

ICS8543

LOW SKEW, 1-TO-4

LVDS FANOUT BUFFER

PRELIMINARY

TABLE 7. 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 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.

rebmuNredrO/traPgnikraMegakcaPtnuoCerutarepmeT

GB3458SCIGB3458SCIPOSSTdael02ebutrep27C°07otC°0

TGB3458SCIGB3458SCIleeRdnaepaTnoPOSSTdael020052C°07otC°0