17

Integrated

Circuit

Systems, Inc.

ICS954321

1078B—09/20/05

Electrical Characteristics - REF-14.318MHz

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Notes

Long Accuracy

ppm

see Tperiod min-max values

-300

300

ppm

1,2

Clock period

Tperiod

14.318MHz output nominal

69.8270

69.8550

ns

2

Output High Voltage

VOH

IOH = -1 mA

2.4

V

1

Output Low Voltage

VOL

IOL = 1 mA

0.4

V

1

V OH = 1.0 V

-33

mA

1

VOH = 3.135 V

-33

mA

1

VOL = 1.95 V

30

mA

1

VOL = 0.4 V

38

mA

1

Edge Rate

tslewr/f

Rising/Falling edge rate

1

4

V/ns

1

Rise Time

tr

VOL = 0.4 V, VOH = 2.4 V

0.5

2

ns

1

Fall Time

tf

VOH = 2.4 V, VOL = 0.4 V

0.5

2

ns

1

Skew

tsk1

VT = 1.5 V

500

ps

1

Duty Cycle

dt1

VT = 1.5 V

45

55

%

1

Jitter

tjcyc-cyc

VT = 1.5 V

1000

ps

1

*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%, CL = 20 pF with Rs = 7Ω (Rs is used in USB48MHz test only)

1Guaranteed by design and characterization, not 100% tested in production.

2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz

Output High Current

IOH

Output Low Current

IOL