ICS9148F-18 datasheet(8/11 Pages) ICST

Part #	ICS9148F-18

Description	Pentium/ProTM System Clock Chip

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Manufacturer	ICST [Integrated Circuit Systems]

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8

ICS9148-18

Electrical Characteristics - CPUCLK

TA = 0 - 70C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 10 - 20 pF (unless otherwise stated)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Output Impedance

RDSP2B

1

VO = VDD*(0.5)

13.5

45

Ω

Output Impedance

RDSN2B

1

VO = VDD*(0.5)

13.5

45

Ω

Output High Voltage

VOH2B

IOH = -12.0 mA

2

2.3

V

Output Low Voltage

VOL2B

IOL = 12 mA

0.2

0.4

V

Output High Current

IOH2B

VOH = 1.7 V

-41

-19

mA

Output Low Current

IOL2B

VOL = 0.7 V

19

37

mA

Rise Time

tr2B

1

VOL = 0.4 V, VOH = 2.0 V

1.2

1.6

ns

Fall Time

tf2B

1

VOH = 2.0 V, VOL = 0.4 V

1

1.6

ns

Duty Cycle

dt2B

1

VT = 1.25 V

45

50

55

%

Skew

tsk2B

1

VT = 1.25 V

65

175

ps

Jitter, Cycle-to-cycle

tjcyc-cyc2B

1

VT = 1.25 V

140

250

ps

Jitter, One Sigma

tj1s2B

1

VT = 1.25 V

30

150

ps

Jitter, Absolute

tjabs2B

1

VT = 1.25 V

-250

150

+250

ps

1

Guaranteed by design, not 100% tested in production.

Electrical Characteristics - REF0

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Output Impedance

1

RDSP5

VO = VDD*(0.5)

20

60

Ohm

Output Impedance

1

RDSN5

VO = VDD*(0.5)

20

60

Ohm

Output High Voltage

VOH5

IOH = -12 mA

2.6

3.1

V

Output Low Voltage

VOL5

IOL = 9 mA

0.17

0.4

V

Output High Current

IOH5

VOH = 2.0 V

-44

-22

mA

Output Low Current

IOL5

VOL = 0.8 V

16

42

mA

Rise Time

1

tr5

VOL = 0.4 V, VOH = 2.4 V

0.9

4

ns

Fall Time

1

tf5

VOH = 2.4 V, VOL = 0.4 V

0.8

4

ns

Duty Cycle

1

dt5

VT = 1.5 V

45

53

55

%

Jitter, One Sigma

1

tj1s5

VT = 1.5 V

1

3

%

Jitter, Absolute

1

tjabs5

VT = 1.5 V

35

%

1

Guaranteed by design, not 100% tested in production.

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ICS9148F-18 Datasheet(PDF) 8 Page - Integrated Circuit Systems

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