10

ICS9248-77

Electrical Characteristics - CPUCLK

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Output High Voltage

VOH2B

IOH = -12.0 mA

2

2.24

V

Output Low Voltage

VOL2B

IOL = 12.0 mA

0.31

0.4

V

Output High Current

IOH2B

VOH = 1.7 V

-31

-19

mA

Output Low Current

IOL2B

VOL = 0.7 V

19

25

mA

Rise Time

tr2B

1

VOL = 0.4 V, VOH = 2.0 V

1.35

1.6

ns

Fall Time

tf2B

1

VOH = 2.0 V, VOL = 0.4 V

1.4

1.6

ns

Duty Cycle

dt2B

1

VT = 1.25 V

454755%

Skew

tsk2B

1

VT = 1.25 V

63

175

ps

Jitter, Cycle-to-cycle

tjcyc-cyc2B

1

VT = 1.25 V

125

250

ps

Jitter, One Sigma

tj1s2B

1

VT = 1.25 V

65

150

ps

Jitter, Absolute

tjabs2B

1

VT = 1.25 V

-250

148

+250

ps

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

Electrical Characteristics - CPU/2

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Output High Voltage

VOH2B

IOH = -12.0 mA

2

2.24

V

Output Low Voltage

VOL2B

IOL = 12.0 mA

0.31

0.4

V

Output High Current

IOH2B

VOH = 1.7 V

-31

-19

mA

Output Low Current

IOL2B

VOL = 0.7 V

19

26

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

1.2

1.6

ns

Duty Cycle

dt2B

1

VT = 1.25 V

454955%

Jitter, Cycle-to-cycle

tjcyc-cyc2B

1

VT = 1.25 V

125

250

ps

Jitter, One Sigma

tj1s2B

1

VT = 1.25 V

50

150

ps

Jitter, Absolute

tjabs2B

1

VT = 1.25 V

-250

97

+250

ps

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

Group Offset

Group

Offset

Measurement L oads

Measure Points

CPU to 3V66

0.0-1.5ns CPU leads

C PU @ 20pF, 3V66 @ 30pF

CPU @1.25V, 3V66 @ 1.5V

3V66 to PCI

1.5-4.0ns 3V66 leads

3V66 @ 30pF, PCI @ 30pF

3V66 @ 1.5V, PC I @ 1.5V

CPU to IOAPIC

1.5-4.0ns CPU leads

CPU @ 20pF, IOAPIC @ 20pF

CPU @1.25V, IOAPIC @ 1.5V

Note: 1. All offsets are to be meas ured at rising edges.