84326AM

www.icst.com/products/hiperclocks.html

REV. A MARCH 10, 2003

1

Integrated

Circuit

Systems, Inc.

ICS84326

PRELIMINARY

The ICS84326 is a Crystal-to-3.3V LVPECL Clock

Synthesizer/Fanout Buffer designed for Serial

Attached SCSI applications and is a member of

the HiperClockS family of High Performance Clock

Solutions from ICS. Using a 25MHz crystal, the

6 LVPECL outputs can be set for either 75MHz or 150MHz

using the frequency select pins. The low jitter/low phase noise

characteristics make it an ideal clock source for use in Serial

Attached SCSI applications or for other applications which

require a 75MHz or 150MHz reference clock.

• 6 LVPECL outputs

• Crystal oscillator interface

• Output frequency: 75MHz or 150MHz

• Crystal input frequency: 25MHz

• Cycle-to-cycle jitter: 20ps (typical)

• RMS phase jitter at 150MHz, using a 25MHz crystal

(899.8KHz to 20MHz): TBD

• Phase noise:

Offset

Noise Power

100Hz ............... TBD

1KHz ............... TBD

10KHz ............... TBD

100KHz ............... TBD

• Full 3.3V or 3.3V core, 2.5V supply mode

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

HiPerClockS™

,&6

Q0:Q5

ICS84326

24-Lead, 300-MIL SOIC

7.5mm x 15.33mm x 2.3mm body package

M Package

Top View

Q0

nQ0

Q1

nQ1

Q2

nQ2

Q3

nQ3

Q4

nQ4

Q5

nQ5

1

2

3

4

5

6

7

8

9

10

11

12

F_SEL

nc

MR

XTAL1

XTAL2

nc

PLL_SEL

PLL

Feedback

Divider

OSC

Output

Divider

0

1

XTAL1

XTAL2

PLL_SEL

MR

F_SEL

nQ0:nQ5

24

23

22

21

20

19

18

17

16

15

14

13

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u

p

n

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r

F

t

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p

t

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ML

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FT

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O

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F

1X

W

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z

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M

5

7

01

z

H

M

0

5

1

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.