ICS9148M-47 datasheet(7/9 Pages) ICST

Part #	ICS9148M-47

Description	Pentium/ProTM System Clock Chip

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Manufacturer	ICST [Integrated Circuit Systems]

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ICS9148-47

Electrical Characteristics - PCICLK

TA = 0 - 70C; VDD = VDDL = 3.3 V +/-5%; CL = 30 pF

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Output High Voltage

VOH1

IOH = -11 mA

2.4

3.1

V

Output Low Voltage

VOL1

IOL = 9.4 mA

0.1

0.4

V

Output High Current

IOH1

VOH = 2.0 V

-62

-22

mA

Output Low Current

IOL1

VOL = 0.8 V

16

57

mA

Rise Time

1

tr1

VOL = 0.4 V, VOH = 2.4 V

1.5

2

ns

Fall Time

1

tf1

VOH = 2.4 V, VOL = 0.4 V

1.1

2

ns

Duty Cycle

1

dt1

VT = 1.5 V

45

50

55

%

Skew

1

tsk1

VT = 1.5 V

140

500

ps

Jitter, One Sigma

1

tj1s1

VT = 1.5 V

17

150

ps

Jitter, Absolute

1

tjabs1

VT = 1.5 V

-500

70

500

ps

1

Guaranteed by design, not 100% tested in production.

Electrical Characteristics - IOAPIC

TA = 0 - 70C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 20 pF

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Output High Voltage

VOH4B

IOH = -18 mA

2

2.2

V

Output Low Voltage

VOL4B

IOL = 18 mA

0.33

0.4

V

Output High Current

IOH4B

VOH = 1.7 V

-41

-28

mA

Output Low Current

IOL4B

VOL = 0.7 V

29

37

mA

Rise Time

1

Tr4B

VOL = 0.4 V, VOH = 2.0 V

1.3

1.6

ns

Fall Time

1

Tf4B

VOH = 2.0 V, VOL = 0.4 V

1.1

1.6

ns

Duty Cycle

1

Dt4B

VT = 1.25 V

45

54

55

%

Skew

1

tsk4B

1

VT = 1.25 V

60

250

ps

Jitter, One Sigma

1

Tj1s4B

VT = 1.25 V

1

3

%

Jitter, Absolute

1

Tjabs4B

VT = 1.25 V

-5

5

%

1

Guaranteed by design, not 100% tested in production.

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