ICST ICS8701-01Y, ICS8701-01YT Datasheet

Integrated
Circuit
Systems, Inc.

ICS8701-01

L

OW SKEW ¸1, ¸2 CLOCK

GENERAT OR W/POLARITY CONTROL

GENERAL DESCRIPTION

The ICS8701-01 is a low skew, ÷1, ÷2 Clock

,&6

HiPerClockS™

minated transmission lines. The effective fanout can be in­creased from 20 to 40 by utilizing the ability of the outputs to
drive two series terminated lines.

The divide select inputs, DIV_SELx, control the output fre­quency of each bank. The outputs can be utilized in the ÷1,
÷2 or a combination of ÷1 and ÷2 modes. The master reset/
output enable input, nMR/OE, resets the internal dividers and
controls the active and high impedance states of all outputs.
The output polarity inputs, INV0:1, control the polarity (invert­ing or non-inverting) of the outputs of each bank. Outputs
QA0-QA4 are inverting for every combination of the INV0:1
input. The timing relationship between the inverting and non­inverting outputs at different frequencies is shown in the Tim­ing Diagrams.

The ICS8701-01 is characterized at 3.3V and mixed 3.3V in­put supply, and 2.5V output supply operating modes. Guar­anteed bank, output and part-to-part skew characteristics
make the ICS8701-01 ideal for those clock distribution appli­cations demanding well defined performance and repeatabil­ity.

Generator and a member of the HiPerClockS
fa mil y of Hi gh Performance Clock Solutions
from ICS. The low impedance LVCMOS outputs

are designed to drive 50Ω series or parallel ter-

FE ATURES

 20 LVCMOS outputs, 7Ω typical output impedance

 Output frequency up to 250 MHz

 250ps bank skew, 300ps output skew, 350ps multiple

frequency skew, 700ps part-to-part skew

 Selectable inverting and non-inverting outputs

 LVCMOS / LVTTL clock input

 LVCMOS / LVTTL control inputs

 Bank enable logic allows unused banks to be disabled

in reduced fanout applications

 3.3V or mixed 3.3V input, 2.5V output operating

supply modes

 48 lead low-profile QFP (LQFP), 7mm x 7mm x 1.4mm

package body, 0.5mm package lead pitch

 0°C to 70°C ambient operating temperature

 Other divide values available on request

BLOCK DIAGRAM PIN ASSIGNMENT

GND

LVCMOS_CLK

DIV_SELA

DIV_SELB

DIV_SELC

DIV_SELD

nMR/OE

INV0

INV1

÷1
÷2

1
0

1
0

1
0

1
0

Output
Polarity
Control

QAO - QA4

QB0 - QB4

QC0 - QC4

QD0 - QD4

QC3

VDDOC

QC4
QD0

VDDOD

QD1

GND

QD2

GND

QD3

VDDOD

QD4

GND

48 47 46 45 44 43 42 41 40 39 38 37

1
2
3
4
5
6
7
8
9
10
11
12

13 14 15 16 17 18 19 20 21 22 23 24

DIV_SELD

QC1

QC2

ICS8701-01

VDDI

nMR/OE

DIV_SELC

48-Pin LQFP

VDDOC

INV1

QC0

GND

QB4

INV0

VDDOB

VDDI

Y Package

Top View

GND

QB2

QB3

DIV_SELB

LVCMOS_CLK

GND

GND

36
35
34
33
32
31
30
29
28
27
26
25

DIV_SELA

QB1
VDDOB
QB0
QA4
VDDOA
QA3
GND
QA2
GND
QA1
VDDOA
QA0

8701-01 www.icst.com REV. A - AUGUST 28, 2000

1

Integrated
Circuit
Systems, Inc.

TABLE 1. PIN DESCRIPTIONS

rebmuNemaNepyTnoitpircseD

44,2CODDVrewoP .V5.2roV3.3ottcennoC.ylppusrewopCknaBtuptuO

11,5DODDVrewoP .V5.2roV3.3ottcennoC.ylppusrewopDknaBtuptuO

23,62AODDVrewoP .V5.2roV3.3ottcennoC.ylppusrewopCknaBtuptuO

14,53BODDVrewoP .V5.2roV3.3ottcennoC.ylppusrewopBknaBtuptuO

,81,9,7

,03,82,12
,64,93,73

84

02,61IDDVrewoP.V3.3ottcennoC.ylppusrewoptupnI

,92,72,52

33,13

,83,63,43

24,04

,74,54,34

3,1

,8,6,4

21,01

22KLC_SOMCVLtupnIpulluP.slevelecafretniSOMCVL.tupnikcolC

31DLES_VIDtupnIpulluP .slevelecafretniSOMCVL.stuptuoDknabrofnoisividycneuqerfslortnoC

41CLES_VIDtupnIpulluP .slevelecafretniSOMCVL.stuptuoCknabrofnoisividycneuqerfslortnoC

32BLES_VIDtupnIpulluP .slevelecafretniSOMCVL.stuptuoBknabrofnoisividycneuqerfslortnoC

42ALES_VIDtupnIpulluP .slevelecafretniSOMCVL.stuptuoAknabrofnoisividycneuqerfslortnoC

91,710VNI,1VNItupnIpulluP .slevelecafretniSOMCVL.sknabybstuptuofoytiralopsenimreteD

51EO/RMntupnIpulluP

DNGrewoP.dnuorgottcennoC.dnuorG

,2AQ,1AQ,0AQ

4AQ,3AQ

,2BQ,1BQ,0BQ

4BQ,3BQ

,2CQ,1CQ,0CQ

4CQ,3CQ

,2DQ,1DQ,0DQ

4DQ,3DQ

tuptuO7.slevelecafretniSOMCVL.stuptuoAknaB Ω .ecnadepmituptuolacipyt

tuptuO7.slevelecafretniSOMCVL.stuptuoBknaB Ω .ecnadepmituptuolacipyt

tuptuO7.slevelecafretniSOMCVL.stuptuoCknaB Ω .ecnadepmituptuolacipyt

tuptuO7.slevelecafretniSOMCVL.stuptuoDknaB Ω .ecnadepmituptuolacipyt

ICS8701-01

L

OW SKEW ¸1, ¸2 CLOCK

GENERAT O R W/POLARITY CONTROL

steS.WOLotstuptuognitrevni-nonsteseR.elbanetuptuodnateserretsaM

.slevel

ecafretniSOMCVL.stuptuollaselbasiddnaselbanE.HGIHotstuptuognitrevni

TABLE 2. PIN CHARACTERISTICS

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

NICecnaticapaCtupnI Fp

PULLUPRrotsiseRpulluPtupnI 15KΩ

DPCecnaticapaCnoitapissiDrewoP

)tuptuorep(

TUORecnadepmItuptuO 7

V564.3=xODDV,IDDV Fp

V526.2=xODDV,V564.3=IDDV Fp

TABLE 3. FUNCTION TABLE

stupnI stuptuO

EO/RMnxLES_VID1VNI0VNIAKNABBKNABCKNABDKNABycneuqerfxQ

0XX X ZiHZiHZiHZiHorez

10 0 0 gnitrevnIgnitrevni-noNgnitrevni-noNgnitrevni-noN2/NIf

10 0 1 gnitrevnIgnitrevnIgnitrevni-noNgnitrevni-noN2/NIf

10 1 0 gnitrevnIgnitrevnIgnitrevnIgnitrevni-noN2/NIf

10 1 1 gnitrevnIgnitrevnIgnitrevnIgnitrevnI2/NIf

110 0 gnitrevnIgnitrevni-noNgnitrevni-noNgnitrevni-noNNIf

110 1 gnitrevnIgnitrevnIgnitrevni-noNgnitrevni-noNNIf

111 0 gnitrevnIgnitrevnIgnitrevnIgnitrevni-noNNIf

111 1 gnitrevnIgnitrevnIgnitrevnIgnitrevnINIf

Ω

8701-01 www.icst.com REV. A - AUGUST 28, 2000

2

Integrated
Circuit

L

OW SKEW ¸1, ¸2 CLOCK

ICS8701-01

Systems, Inc.

GENERAT OR W/POLARITY CONTROL

ABSOLUTE MAXIMUM RATINGS

Supply Voltage 4.6V

Inputs -0.5V to VDDI + 0.5V
Outputs -0.5V to VDDOx + 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 DC Electrical
Characteristics or AC Electrical Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may
affect product reliability.

TABLE 4A. DC ELECTRICAL CHARACTERISTICS, VDDI = VDDOX = 3.3V±5%, TA = 0°C TO 70°C

lobmySretemaraP snoitidnoCtseTmuminiMlacipyTmumixaMstinU

IDDVegatloVylppuSrewoPtupnI 531.33.3564.3V

xODDVegatloVylppuSrewoPtuptuO 531.33.3564.3V

HIVegatloVhgiHtupnI

LIVegatloVwoLtupnI

HIItnerruChgiHtupnI V564.3=NIV=IDDV5Aµ

LIItnerruCwoLtupnI V0=NIV=IDDV051-Aµ

DDItnerruCylppuSrewoPtnecseiuQ 07Am

HOVegatloVhgiHtuptuO

LOVegatloVwoLtuptuO

KLC_SOMCVL2567.3V

KLC_SOMCVL3.0-3.1V

KLC_SOMCVLtpecxellA

KLC_SOMCVLtpecxellA

V564.3=IDDV

V531.3=IDDV

V531.3=xODDV

Am63-=HOI

V531.3=xODDV

Am63=LOI

2567.3V

3.0-8.0V

6.2V

5.0V

TABLE 5A. AC ELECTRICAL CHARACTERISTICS, VDDI = VDDOX = 3.3V±5%, TA=0°C TO 70°C

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

XAMfycneuqerFtupnImumixaM 052zHM

HLpthgiH-ot-woL,yaleDnoitagaporPZHM0 < f ≤ zHM0025.25.3sn

LHptwoL-ot-hgiH,yaleDnoitagaporPZHM0 < f ≤ zHM0025.25.3sn

)b(kst2ETON;wekSknaB 2/xODDVtaegdegnillafnoderusaeM052sp

)o(kst3ETON;wekStuptuO 2/xODDVtaegdegnillafnoderusaeM003sp

(kst ω)4ETON;wekSycneuqerFelpitluM 2/xODDVtaegdegnillafnoderusaeM053sp

)pp(kst5ETON;wekStraPottraP 2/xODDVtaegdegnillafnoderusaeM007sp

Rt6ETON;emiTesiRtuptuO 051007sp

Ft6ETON;emiTllaFtuptuO 051007sp

05htiwdetanimretstuptuollA.esiwrehtodetonsselnuzHM002taderusaemsretemarapllA:1ETON Ω .2/xODDVot

2/ELCYCt

5.0-

2/ELCYCt

.snoitidnocdaollauqehtiwdnasegatlovylppusemasehttastuptuofoknabanihtiwwekssadenifeD:2ETON

WPthtdiWesluPtuptuO

NEtemiTelbanEtuptuO6ETON; 6sn

SIDtemiTelbasiDtuptuO6ETON; 6sn

.snoitidnoc

.snoitidnocdaollauqednasegatlov

.snoitidnocdaollauqehtiwdna

ZHM0 < f < zHM002

zHM002=f25.23sn

.noitcudorpnidetsettoN.noitaziretcarahcybdeetnaraugerasretemarapesehT:6ETON

2/ELCYCt

5.0+

daollauqehtiwdnasegatlovylppusemasehttanoitceridemasehtnignihctiwsstuptuofosknabssorcawekssadenifeD:3ETON

sn

ylppusemasehthtiwseicneuqerftnereffidtagnitareponoitceridemasehtnignihctiwsstuptuofosknabssorcawekssadenifeD:4ETON

segatlovylppusemasehttagnitareposecivedtnereffidnonoitceridemasehtnignihctiwsstuptuotnereffidtaweksehtsadenifeD:5ETON

8701-01 www.icst.com REV. A - AUGUST 28, 2000

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