ICS552-01A

Crystal Oscillator & Multiplier with 8 Low Skew Outputs

MDS 552-01 AB

1

Revision 032200

Printed 11/14/00

Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • (408) 295-9800tel • www.icst.com

Description

The ICS552-01A produces 8 low skew

copies of a multiple of the input when a

clock or fundamental, parallel-mode crystal

is connected to it. Unlike other clock

drivers, it does not require a separate

oscillator for the input. Using a phase-

locked loop (PLL) to multiply the input

frequency, it is ideal for generating and

distributing multiple high frequency clocks.

Features

• Packaged in 20 pin SSOP (QSOP)

• Input frequency of 10.0 - 27.0 MHz

• Contains on-chip multiplier with selections

of x1, x1.33, x2, x2.66, x3, x3.33, x4,

x4.66, x5, and x6

• Provides 8 low skew outputs (<250 ps)

• Output clock duty cycle of 40/60 at 3.3 V

• Operating voltages of 3.0 V to 5.5 V

• Industrial temperature available

• Power Down and Tri state modes

Block Diagram

CLK1

CLK2

CLK3

CLK4

CLK6

CLK5

CLK7

CLK8

Output

Buffer

Output

Buffer

Output

Buffer

Output

Buffer

Output

Buffer

Output

Buffer

Output

Buffer

Output

Buffer

Clock

Buffer/

Crystal

Oscillator

10.0 - 27.0 MHz

crystal or clock

VDD

GND

X2

X1

PLL

Multiplier

S3:S0

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