8535-31 Просмотр технического описания (PDF) - Integrated Device Technology

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8535-31

LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/LVCMOS-TO-3.3V LVPECL FANOUT BUFFER

Integrated Device Technology 

DATA SHEET

LTOOW-3.3SVKELWVP, E1ICSC-nyiTtrseLctgOeurmiaFt-tse4A,dI,nNcC.ORUYTSTBAULFFOESRCILLVLCAMLTOOOWSRS-T/KOEL-W3V,.3C1V-MTOLOV-4PS,EC- CRYLICSFTASALN8OOU5SITC3CIBL5LSUA-F8T3FO5ER1R3/ 5-31

GENERAL DESCRIPTION

The ICS8535-31 is a low skew, high performance

ICS

1-to-4 3.3V Crystal Oscillator/LVCMOS-to-3.3V

HiPerClockS™ LVPECL fanout buffer and a member of the

HiPerClockS™family of High Performance Clock

Solutions from ICS. The ICS8535-31 has select-

able single ended clock or crystal inputs. The single ended

clock input accepts LVCMOS or LVTTL input levels and

translate them to 3.3V LVPECL levels. The output enable is

internally synchronized to eliminate runt pulses on the out-

puts during asynchronous assertion/deassertion of the clock

enable pin.

Guaranteed output and part-to-part skew characteristics

make the ICS8535-31 ideal for those applications demand-

ing well defined performance and repeatability.

FEATURES

• 4 differential 3.3V LVPECL outputs

• Selectable LVCMOS/LVTTL CLK or crystal inputs

• CLK can accept the following input levels: LVCMOS, LVTTL

• Maximum output frequency: 266MHz

• Output skew: 30ps (maximum)

• Part-to-part skew: 200ps (maximum)

• Propagation delay: 1.65ns (maximum)

• Additive phase jitter, RMS: 0.057ps (typical)

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Lead-Free package fully RoHS compliant

• Industrial Temperature information available upon request

• Replaces the ICS8535-11

BLOCK DIAGRAM

CLK_EN Pullup

CLK Pulldown

0

XTAL_IN

OSC

1

XTAL_OUT

CLK_SEL Pulldown

D

Q

LE

PIN ASSIGNMENT

Q0

nQ0

Q1

nQ1

VEE 1

20 Q0

CLK_EN 2 19 nQ0

CLK_SEL 3

18 VCC

CLK 4 17 Q1

nc 5 16 nQ1

XTAL_IN 6 15 Q2

XTAL_OUT 7 14 nQ2

nc 8

13 VCC

nc 9 12 Q3

VCC 10 11 nQ3

Q2

ICS8535-31

nQ2

20-Lead TSSOP

Q3

6.5mm x 4.4mm x 0.92mm package body

nQ3

G Package

Top View

8535AG-31

www.icst.com/products/hiperclocks.html

IDT™ / ICS™ LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/ LVCMOS-TO1-3.3V LVPECL FANOUT BUFFER

1

REV. B APRIL 29, 2005

ICS8535-31

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