12

ICS950410

Advance Information

0888—04/06/04

Electrical Characteristics - CPUCLKK8T/C K8 3.3V Push Pull Differential Pair

PARAMETER

SYMBOL

CONDITIONS*

MIN

TYP

MAX

UNITS

NOTES

Rising Edge Rate

δV/δt

2

10

V/ns

1

Falling Edge Rate

δV/δt

2

10

V/ns

1

Differential Voltage

V

DIFF

0.4

2.3

V

1

Change in V

∆V

DIFF

-150

150

mV

1

Common Mode Voltage

V

CM

1.05

1.45

V

1

Change in Common Mode

Voltage

∆V

CM

-200

200

mV

1

Jitter, Cycle to cycle

t

jcyc-cyc

Measurement from differential

wavefrom

0

200

ps

1

Jitter, Accumulated

t

ja

-1000

1000

1,2,3

Duty Cycle

d

t3

Measurement from differential

wavefrom

45

55

%

1

Output Impedance

R

ON

Average value during switching

transition. Used for determining

series termination value.

15

55

Ω

1

Group Skew

t

skew

Measurement from differential

wavefrom

250

ps

1

*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%

At CPU's test load. 0 V +/- 400

mV (diffential measurment)

At CPU's test load. (single-

ended measurement)

Electrical Characteristics - HTTCLK

PARAMETER

SYMBOL

CONDITIONS*

MIN

TYP

MAX

UNITS

NOTES

Output Impedance

Z

O

V

12

55

Ω

1

Output High Voltage

V

OH1

I

2.4

V

1

Output Low Voltage

V

OL1

I

0.4

V

1

Output High Current

I

OH1

V

-15

mA

1

Output Low Current

I

OL1

V

10

mA

1

Edge Rate

t

slewr/f

Rise/Fall edge rate between

20% 60%

14

V/ns

1

Rise Time

t

r

V

0.5

2

ns

1

Fall Time

t

f

V

0.5

2

ns

1

Duty Cycle

d

t1

V

45

55

%

1

Group Skew

t

skew

V

150

ps

1

Jitter, Cycle-to-cycle

t

jcyc-cyc2B

V

250

ps

1

*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%