ICS952621 参数 Datasheet PDF下载

Integrated

Circuit

Systems, Inc.

ICS952621

Electrical Characteristics - VCH, USB

T

A

= 0 - 70°C; V

DD

= 3.3V +/-5%; C

L

= 10-20 pF (unless otherwise specified)

PARAMETER

Long Accuracy

Clock period

Output High Voltage

Output Low Voltage

SYMBOL

ppm

T

period

V

OH

V

OL

CONDITIONS

MIN

TYP

MAX

UNITS Notes

1,2

2

see Tperiod min-max values

-200

200

ppm

48.008MHz output nominal

20.8257

20.8340 ns

I

OH

= -1 mA

2.4

V

I

OL

= 1 mA

0.55

V

V

OH

= 1.0 V

-29

mA

I

OH

Output High Current

V

OH

= 3.135 V

-23

mA

V

OL

= 1.95 V

29

mA

I

OL

Output Low Current

V

OL

= 0.4 V

27

mA

Rising edge rate

1

2

V/ns

Edge Rate

Edge Rate

Falling edge rate

1

2

V/ns

t

r1

V

OL

= 0.4 V, V

OH

= 2.4 V

Rise Time

1

1.45

2

ns

t

f1

V

OH

= 2.4 V, V

OL

= 0.4 V

Fall Time

1

1.37

2

ns

V

T

= 1.5 V

d

t1

45

52.5

55

%

Duty Cycle

V

T

= 1.5 V

t

sk1

1

ns

Skew

125us period jitter

0.628

6

ns

Long Term Jitter

(8kHz frequency modulation

amplitude)

1

Guaranteed by design, not 100% tested in production.

2

All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at

14.31818MHz

1

1

1

1

1

1

1

Electrical Characteristics - 48MHz DOT Clock

T

A

= 0 - 70°C; V

DD

= 3.3V +/-5%; C

L

= 5-10 pF (unless otherwise specified)

PARAMETER

Long Accuracy

Clock period

Output High Voltage

Output Low Voltage

Output High Current

Output Low Current

Edge Rate

Edge Rate

Rise Time

Fall Time

Duty Cycle

Skew

t

r1

t

f1

d

t1

t

sk1

SYMBOL

ppm

T

period

V

OH

V

OL

I

OH

I

OL

CONDITIONS

see Tperiod min-max values

48.008MHz output nominal

I

OH

= -1 mA

I

OL

= 1 mA

V

OH

= 1.0 V

V

OH

= 3.135 V

V

OL

= 1.95 V

V

OL

= 0.4 V

Rising edge rate

Falling edge rate

V

OL

= 0.4 V, V

OH

= 2.4 V

MIN

-200

20.8257

2.4

TYP

MAX

200

20.8340

0.55

-29

-23

29

2

2

0.5

0.87

27

4

4

1

UNITS

ppm

ns

V

V

mA

mA

mA

mA

V/ns

V/ns

ns

Notes

1,2

2

1

1

1

1

1

1

1

V

OH

= 2.4 V, V

OL

= 0.4 V

0.5

0.89

1

ns

V

T

= 1.5 V

45

52.3

55

%

V

T

= 1.5 V

1

ns

125us period jitter

0.636

2

ns

Long Term Jitter

(8kHz frequency modulation

amplitude)

1

Guaranteed by design, not 100% tested in production.

2

All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at

14.31818MHz

0756A—09/10/04

7