ICSI ICS853561 User Manual

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Integrated
Circuit
Systems, Inc.

GENERAL DESCRIPTION

ICS

HiPerClockS™

the CLKxx input pairs will be passed to the output. When
COM_SEL is logic Low, the output is determined by the setting
of the SEL0 pin for channel 0 and the SEL1 pin for Channel 1.

The differential input has a common mode range that can accept
most differential input types such as LVPECL, LVDS, LVHSTL,
SSTL, and HCSL. The ICS85356I can therefore be used as a
differential translator to translate almost any differential input type
to LVPECL. It can also be used in ECL mode by setting V
and V

The ICS85356I adds negligible jitter to the input clock and can
operate at high frequencies in excess of 900MHz thus making
it ideal for use in demanding applications such as SONET,
Fibre Channel, 1 Gigabit/10 Gigabit Ethernet.

The ICS85356I is a dual 2:1 Differential-to-LVPECL
Multiplexer and is a member of the HiPerClockS
family of High Performance Clock Solutions from
ICS. The device has both common select and indi­vidual select inputs. When COM_SEL is logic High,

to -3.0V to - 3.8V.

EE

CC

TM

=0V

ICS85356I

2:1, DIFFERENTIAL-TO-3.3V

DUAL LVPECL / ECL CLOCK MULTIPLEXER

FEATURES

• High speed differential multiplexer.
The device can be configured as a 2:1 multiplexer

• Dual 3.3V LVPECL outputs

• Selectable differential CLKxx, nCLKxx inputs

• CLKxx, nCLKxx pair can accept the following differential

input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL

• Output frequency: 900MHz (typical)

• Translates any single ended input signal to 3.3V

LVPECL levels with resistor bias on nCLKxx input

• Output skew: 75ps (typical)

• Propagation delay: 1.15ns (typical)

• LVPECL mode operating voltage supply range:

= 3V to 3.8V, VEE = 0V

V

CC

• ECL mode operating voltage supply range:

= 0V, VEE = -3V to -3.8V

V

CC

• -40°C to 85°C ambient operating temperature

• Lead-Free package available

• Compatible with MC100LVEL56

BLOCK DIAGRAM PIN ASSIGNMENT

CLK0A

nCLK0A

CLK0B

nCLK0B

SEL0

COM_SEL

SEL1

CLK0A

0

1

Q0
nQ0

nCLK0A

CLK0B

nCLK0B

CLK1A

nCLK1A

CLK1B

nCLK1B

nc

nc

1
2
3
4
5
6
7
8
9
10

20
19
18
17
16
15
14
13
12
11

V

CC

Q0
nQ0
SEL0
COM_SEL
SEL1
V

CC

Q1
nQ1
V

EE

CLK0A

nCLK0A

CLK0B

nCLK0B

CLK1A

nCLK1A

CLK1B

nCLK1B

ICS85356I

CLK1A

nCLK1A

CLK1B

nCLK1B

85356AMI www.icst.com/products/hiperclocks.html REV. A OCTOBER 7, 2004

0

1

Q1
nQ1

1

20-Lead SOIC

7.5mm x 12.8mm x 2.3mm

M Package

Top View

6.5mm x 4.4mm x 0.92mm

1
2

nc

3
4
5
6
7

nc

8
9
10

ICS85356I

20-Lead TSSOP

G Package

Top View

20
19
18
17
16
15
14
13
12
11

V

CC

Q0
nQ0
SEL0
COM_SEL
SEL1
V

CC

Q1
nQ1
V

EE

Integrated
Circuit
Systems, Inc.

2:1, DIFFERENTIAL-TO-3.3V

DUAL LVPECL / ECL CLOCK MULTIPLEXER

TABLE 1. PIN DESCRIPTIONS

rebmuNemaNepyTnoitpircseD

02,41V

1A0KLCtupnInwodlluP.tupnikcolclaitnereffidgnitrevni-noN

2A0KLCntupnIpulluP.tupnikcolclaitner

8,3cndesunU.tcennocoN

4B0KLCtupnInwodlluP.tupnikcolclaitnereffidgnitrevni-noN

5B0KLCntupnIpulluP.tup

6A1KLCtupnInwodlluP.tupnikcolclaitnereffidgnitrevni-noN

7A1KLCntupnIpulluP.tupnikc

9B1KLCtupnInwodlluP.tupnikcolclaitnereffidgnitrevni-noN

01B1KLCntupnIpulluP.tupnikcolc

11V

31,211Q,1QntuptuO.slevelecafretniLCEPVL.sriaptuptuolaitnereffiD

511LEStupnIpulluP.slev

61LES_MOCtupnInwodlluP.slevelecafretniLTTVL/SOMCVL.tupnitcelesnom

710LEStupnIpulluP.slevelecafretniLTTVL/SOMCVL.tupnitceleskcolC

91,810Q,0QntuptuO.slevelecafretniLCEPVL.sri

:ETON

pulluP

CC

EE

dna

nwodlluP

rewoP.nipylppuseroC

effidgnitrevnI

nikcolclaitnereffidgnitrevnI

olclaitnereffidgnitrevnI

laitnereffidgnitrevnI

rewoP.snipylppusevitageN

moC

aptuptuolaitnereffiD

ICS85356I

elecafretniLTTVL/SOMCVL.tupnitceleskcolC

.seulavlacipytrof,scitsiretcarahCniP,2elbaTeeS.srotsisertupnilanretniotrefer

TABLE 2. PIN CHARACTERISTICS

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

C

NI

R

PULLUP

R

NWODLLUP

ecnaticapaCtupnI 4Fp

rotsiseRpulluPtupnI 15KΩ

rotsiseRnwodlluPtupnI 15KΩ

TABLE 3. CONTROL INPUT FUNCTION TABLE

stupnIstuptuO

LES_MOC1LES0LES0Q0Qn1Q1Qn

000 A0KLCA0KLCnA1KLCA1KLCn

00 1 B0KLCB0KLCnA1KLCA1KLCn

010 A0KLCA0KLCnB1KLCB1KLCn

011 B0KLCB0KLCnB1KLCB1KLCn

1XX B0KLCB0KLCnB1KLCB1KLCn

85356AMI www.icst.com/products/hiperclocks.html REV. A OCTOBER 7, 2004

2

Integrated
Circuit
Systems, Inc.

ABSOLUTE MAXIMUM RATINGS

ICS85356I

2:1, DIFFERENTIAL-TO-3.3V

DUAL LVPECL / ECL CLOCK MULTIPLEXER

Supply Voltage, V

Inputs, V

I

Outputs, I
Continuous Current 50mA

CC

O

4.6V

-0.5V to V

+ 0.5V

CC

Surge Current 100mA

Package Thermal Impedance, θ

Storage Temperature, T

STG

TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, V

46.2°C/W (0 lfpm)

JA

-65°C to 150°C

= 3.3V±0.3V, TA = -40°C TO 85°C

CC

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

V

CC

I

EE

egatloVylppuSevitisoP 0.33.36.3V

tnerruCylppuSrewoP 04Am

TABLE 4B. LVCMOS / LVTTL DC CHARACTERISTICS, V

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

V

HI

V

LI

I

HI

I

LI

egatloVhgiHtupnILES_MOC,1LES,0LES2V

egatloVwoLtupnILES_MOC,1LES,0LES3.0-8.0V

tnerruChgiHtupnI

tnerruCwoLtupnI

1LES,0LESV

LES_MOCV

1LES,0LESV

LES_MOCV

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 be­yond those listed in the

istics

is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect product reliability.

= 3.3V±0.3V, TA = -40°C TO 85°C

CC

V=

CC

V=

CC

CC

CC

V6.3=5Aµ

NI

V6.3=051Aµ

NI

V,V6.3=

V0=051-Aµ

NI

V,V6.3=

V0=5-Aµ

NI

DC Characteristics

or

AC Character-

3.0+V

CC

TABLE 4C. DIFFERENTIAL DC CHARACTERISTICS, V

= 3.3V±0.3V, TA = -40°C TO 85°C

CC

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

,B0KLC,A0KLC

I

HI

tnerruChgiHtupnI

B1KLC,A1KLC

,B0KLCn,A0KLCn

B1KLCn,A1KLCn

,B0KLC,A0KLC

I

LI

tnerruCwoLtupnI

B1KLC,A1KLC

B1KLCn,A1KLCn

V

PP

V

RMC

85356AMI www.icst.com/products/hiperclocks.html REV. A OCTOBER 7, 2004

egatloVkaeP-ot-kaeP 51.00.1V

V

,B0KLCn,A0KLCn

V

2,1ETON;egatloVtupnIedoMnommoCV

.

VsadenifedsiegatlovtupniedomnommoC:1ETON

HI

V=

V

CC

V=

V

CC

CC

CC

3

V6.3=051Aµ

NI

V6.3=5Aµ

NI

V,V6.3=

V0=5-Aµ

NI

V,V6.3=

V0=051-Aµ

NI

5.0+V

EE

VsixKLCn,xKLCrofegatlovtupnimumixameht,snoitacilppadedneelgnisroF:2ETON

.V3.0+

58.0-V

CC

Integrated
Circuit
Systems, Inc.

ICS85356I

2:1, DIFFERENTIAL-TO-3.3V

DUAL LVPECL / ECL CLOCK MULTIPLEXER

TABLE 4D. LVPECL DC CHARACTERISTICS, V

= 3.3V±0.3V, TA = -40°C TO 85°C

CC

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

V

HO

V

LO

V

GNIWS

TABLE 5. AC CHARACTERISTICS, V

1ETON;egatloVhgiHtuptuOV

1ETON;egatloVwoLtuptuOV

gniwSegatloVtuptuOkaeP-ot-kaePIJ zHM0076.00.1V

05htiwdetanimretstuptuO:1ETON Ω Vot

= 3.3V±0.3V, TA = -40°C TO 85°C

CC

.V2-

CC

4.1-V

CC

0.2-V

CC

lobmySretemaraPsnoitidnoCtseTmuminiMlacipyTmumixaMstinU

f

XAM

t

DP

t

)o(ks3,2ETON;wekStuptuO 57051sp

t

R

t

F

t

cdo

ycneuqerFtuptuO 009zHM

1ETON;yaleDnoitagaporPIJ zHM00958.051.154.1sn

emiTesiRtuptuO%08ot%02002085sp

emiTllaFtuptuO%08ot%02002085sp

wekSelcyCytuD 001sp

ƒtaderusaemsretemarapllA ≤ zHM226.esiwrehtodetonsselnu

hT

.rettijelbarusaemddatonseodtrapsi

.tniopgnissorctuptuolaitnereffidehtottniopgnissorctupnilaitnereffidehtmorfderusaeM:1ETON

daollauqehtiwdnaegatlovylppusemasehttastuptuoneewtebwekssadenifeD:2ETON

ehttaderusaeM

.stniopssorclaitnereffidtuptuo

.snoitidnoc

.56dradnatSCEDEJhtiwecnadroccanidenifedsiretemarapsihT:3ETON

0.1-V

CC

7.1-V

CC

85356AMI www.icst.com/products/hiperclocks.html REV. A OCTOBER 7, 2004

4

2V

V

CC

LVPECL

V

EE

Integrated
Circuit
Systems, Inc.

PARAMETER MEASUREMENT INFORMATION

Qx

nQx

SCOPE

ICS85356I

2:1, DIFFERENTIAL-TO-3.3V

DUAL LVPECL / ECL CLOCK MULTIPLEXER

V

CC

nCLKxA,

nCLKxB

CLKxA,

CLKxB

VPP

Cross Points

V

CMR

-1.3V ± 0.165V

3.3V OUTPUT LOAD AC TEST CIRCUIT

nQx

Qx

nQy

Qy

t

sk(o)

OUTPUT SKEW

V

EE

DIFFERENTIAL INPUT LEVEL

nCLKxA,

nCLKxB

CLKxA,

CLKxB

nQ0, nQ1

Q0, Q1

t

PD

PROPAGATION DELAY

nQ0, nQ1

Q0, Q1

Pulse Width

odc =

t

PERIOD

t

PW

t

PERIOD

Clock
Outputs

20%

80%

t

R

80%

t

F

20%

V

SWING

OUTPUT RISE/FALL TIME OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD

85356AMI www.icst.com/products/hiperclocks.html REV. A OCTOBER 7, 2004

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