14

Integrated

Circuit

Systems, Inc.

ICS950227

0641D—07/03/03

Electrical Characteristics - VCH, 48MHz DOT, 48MHz, USB

TA = 0 - 70°C; VDD=3.3V +/-5%; CL = 10-20 pF (unless otherwise specified)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Frequency

FO

48.008

MHz

Output Impedance

RDSP1

1

VO = VDD*(0.5)

20

60

Ω

Output High Voltage

VOH

1

IOH = -1 mA

2.4

3.27

V

Output Low Voltage

VOL

1

IOL = 1 mA

0.4

V

V OH@MIN = 1.0 V,

-29

-61

Output High Current

IOH

1

V OH@MAX = 3.135 V

-12

-23

mA

Output Low Current

IOL

1

VOL @MIN = 1.95 V, VOL @MAX =

0.4 V

29

27

mA

48DOT Rise Time

tr1

1

VOL = 0.4 V, VOH = 2.4 V

0.5

0.84

1

ns

48DOT Fall Time

tf1

1

VOH = 2.4 V, VOL = 0.4 V

0.5

0.92

1

ns

VCH 48 USB Rise Time

tr1

1

VOL = 0.4 V, VOH = 2.4 V

1

1.74

2

ns

VCH 48 USB Fall Time

tf1

1

VOH = 2.4 V, VOL = 0.4 V

1

1.84

2

ns

48 DOT Duty Cycle

dt1

1

VT = 1.5 V

45

53.2

55

%

VCH 48 USB Duty Cycle

dt1

1

VT = 1.5 V

45

52.5

55

%

48 DOT Jitter

tjcyc-cyc

1

VT = 1.5 V

151

350

ps

USB to DOT Skew

tsk1

1

VT = 1.5 V (0 OR 180 degrees)

0.53

1

ns

VCH Jitter

tjcyc-cyc

1

VT = 1.5 V

187

350

ps

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

Electrical Characteristics - REF

TA = 0 - 70°C; VDD=3.3V +/-5%; CL = 10-20 pF (unless otherwise specified)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Frequency

FO1

14.318

MHz

Output Impedance

RDSP1

1

VO = VDD*(0.5)

20

60

Ω

Output High Voltage

VOH

1

IOH = -1 mA

2.4

3.28

V

Output Low Voltage

VOL

1

IOL = 1 mA

0.4

V

V OH@MIN = 1.0 V

-33

-110

Output High Current

IOH

1

V OH@MAX = 3.135 V

-20

-33

mA

VOL @MIN = 1.95 V

30

110

Output Low Current

IOL

1

VOL @MAX = 0.4 V

37

38

mA

Rise Time

tr1

1

VOL = 0.4 V, VOH = 2.4 V

1

1.38

2

ns

Fall Time

tf1

1

VOH = 2.4 V, VOL = 0.4 V

1

1.31

2

ns

Duty Cycle

dt1

1

VT = 1.5 V

45

54.7

55

%

Jitter

tjcyc-cyc

1

VT = 1.5 V

276

1000

ps

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