12

Integrated

Circuit

Systems, Inc.

ICS950508

0470E—04/06/05

Electrical Characteristics - CPU

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Impedance

1

RDSP2B

Vo=VDD*(0.5)

13.5

15

45

Ω

Output Impedance

1

RDSN2B

Vo=VDD*(0.5)

13.5

16.5

45

Ω

Output High Voltage

VOH2B

IOH = -1 mA

2

2.48

V

Output Low Voltage

VOL2B

IOL = 1 mA

0.04

0.4

V

VOH@MIN = 1 V

-60

-27

VOH@MAX = 2.375V

-27

-7

VOL@MIN = 1.2 V

27

63

VOL@MAX =0.3V

20

30

Rise Time

1

tr2B

VOL = 0.4 V, VOH = 2.0 V

0.4

0.95

1.6

ns

Fall Time

1

tf2B

VOH = 2.0 V, VOL = 0.4 V

0.4

0.85

1.6

ns

Duty Cycle

1

dt2B

VT = 1.25 V

45

50

55

%

Skew

1

tsk2B

VT = 1.25 V

32

175

ps

VT = 1.25 V, CPU 66, SDRAM 100

200

250

CPU 100, SDRAM 100

165

250

CPU 133, SDRAM 100

400

450

CPU 133, SDRAM 133

180

250

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

Jitter, Cycle-to-cycle

1

tjcyc-cyc2B

ps

Output High Current

IOH2B

mA

Output Low Current

IOL2B

mA

Electrical Characteristics - IOAPIC

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Impedance

1

RDSP4B

Vo=VDD*(0.5)

9

30

Ω

Output Impedance

1

RDSN4B

Vo=VDD*(0.5)

9

30

Ω

Output High Voltage

VOH4B

IOH = -5.5 mA

2

V

Output Low Voltage

VOL4B

IOL = 9 mA

0.4

V

VOH@MIN = 1.4 V

-21

VOH@MAX = 2.5V

-36

VOL@MIN = 1.0 V

36

VOL@MAX =0.2V

31

Rise Time

1

tr4B

VOL = 0.4 V, VOH = 2.0 V

0.4

0.9

1.6

ns

Fall Time

1

tf4B

VOH = 2.0 V, VOL = 0.4 V

0.4

1

1.6

ns

Duty Cycle

1

dt4B

VT = 1.25 V

45

50

55

%

Jitter, Cycle-to-cycle

1

tjcyc-cyc4B

VT = 1.25 V

250

500

ps

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

Output High Current

IOH4B

mA

Output Low Current

IOL4B

mA