84314AY

www.icst.com/products/hiperclocks.html

REV. C JANUARY 27, 2005

1

Integrated

Circuit

Systems, Inc.

ICS84314

The ICS84314 is a general purpose quad output

frequency synthesizer and a member of the

HiPerClockS™ family of High Performance Clock

Solutions from ICS. When the device uses par-

allel loading, the M bits are programmable and

the output divider is hard-wired for divide by 2 thus providing

a frequency range of 125MHz to 350MHz. In serial program-

ming mode, the M bits are programmable and the output di-

vider can be set for either divide by 2 or divide by 4, providing

a frequency range of 62.5MHz to 350MHz. The low cycle-

cycle jitter and broad frequency range of the ICS84314 make

it an ideal clock generator for a variety of demanding applica-

tions which require high performance.

• Fully integrated PLL

• 4 differential 3.3V or 2.5V LVPECL outputs

• Selectable crystal oscillator interface

or LVCMOS TEST_CLK input

• Output frequency range: 62.5MHz to 350MHz

• VCO range: 250MHz to 700MHz

• Parallel interface for programming counter

and output dividers during power-up

• Serial 3 wire interface

• Cycle-to-cycle jitter: 23ps (typical)

• Output skew: 16ps (typical)

• Output duty cycle: 49% < odc < 51%, fout ≤ 125MHz

• Full 3.3V or mixed 3.3V core, 2.5V operating supply

• 0°C to 85°C ambient operating temperature

• Lead-Free package available

32 31 30 29 28 27 26 25

9

10 11 12 13 14 15 16

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17

TEST_CLK

XTAL_SEL

S_LOAD

S_DATA

S_CLOCK

MR

M4

M5

M6

M7

M8

OSC

VCO

PLL

Q0

nQ0

Q1

nQ1

Q2

nQ2

Q3

nQ3

÷2

÷4

CONFIGURATION

INTERFACE

LOGIC

÷ M

0

1

0

1

÷ 16

PHASE DETECTOR

ICS84314

HiPerClockS™

ICS

32-Lead LQFP

7mm x 7mm x 1.4mm package body

Y Package

Top View

VCO_SEL

XTAL_SEL

TEST_CLK

XTAL1

XTAL2

MR

S_LOAD

S_DATA

S_CLOCK

nP_LOAD

M0:M8

÷2