6

ICS9147-12

Electrical Characteristics at 3.3V

Note 1: Parameter is guaranteed by design and characterization. Not 100% tested in production.

Note 2: Includes VDDL = 2.5V

Note 3: VDD3 = 3.3V

AC Characteristics

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Rise Time

1

20pF load, 0.8 to 2.0V

CPU, 48MHz; VDD = 3.3V

-0.9

1.5

ns

Rise Time

1

20pF load, 0.8 to 2.0V

CPU; VDDL @ 2.5V

-1.5

2.0

ns

Fall Time

1,3

20pF load, 2.0 to 0.8V CPU, 48MHz;

-

0.8

1.4

ns

Rise Time

1

30pF load SDRAM 0.8 to 2.0V

-

1.0

1.6

ns

Fall Time

1

30pF load SDRAM 2.0 to 0.8V

-

0.9

1.5

ns

30pF load PCI 0.8 to 2.0V

-

1.2

2.0

ns

Fall Time

1

30pF load PCI 2.0 to 0.8V

-

1.1

1.9

ns

Rise Time

1,3

20pF load, 0.8 to 2.0V

24MHz, REF (1:2) & IOAPIC

-

0.83

1.4

ns

Rise Time

1

45pF load, 0.8 to 2.0V , IOAPIC with

VDDL = 2.5V

-2.2

2.6

ns

20pF load, 2.0 to 0.8V

24MHz, REF (1:2) & IOAPIC

-

0.81

1.3

ns

Load = 45pF 0.8 to 2.0V REF0

VDD = 3.3V

1.6

2.0

ns

Fall Time

1

Load = 45pF 2.0 to 0.8V, REF0

VDD = 3.3V

1.6

2.0

ns

Duty Cycle

1

20pF load @ VOUT=1.4V

45

50

55

%

Jitter, Cycle to Cycle

1

CPU, VDDL = 3.0 to 3.7V

250

300

ps

Jitter, One Sigma

1, 2

CPU; Load=20pF,

SDRAM & BUS Clocks Load = 30pF

-

50

150

ps

Jitter, Absolute

1, 2

CPU; Load=20pF,

SDRAM & PCI Clocks Load = 30pF

-250

-

250

ps

PCI; Load=30pF

-500

-

500

ps

REF (1:2), 48/24MHz Load=20pF,

-

1

3

%

Jitter, Absolute

1

REF (1:2), 48/24MHz Load=20pF,

-5

2

5

%

12.0

14.318

16.0

MHz

Logic Input Capacitance

1

Logic input pins

-

5

-

pF

Crystal Oscillator Capacitance

1

X1, X2 pins

-

18

-

pF

From VDD=1.6V to 1st crossing of

66.6 MHz VDD supply ramp < 40ms

-

2.5

4.5

ms

Clock Skew

1

CPU to CPU; Load=20pF; @1.4V

(Same VDD)

-

150

250

ps

Clock Skew

1

SDRAM to SDRAM;

Load=30pF @ 1.4V

-

150

250

ps

Clock Skew

1

PCI to PCI; Load=20pF; @1.4V

-

300

500

ps

Clock Skew

1,2

CPU(20pF) to PCI (30pF); @1.4V

(CPU is early)

1

2.6

4

ns

Clock Skew

1

SDRAM (30pF @3.3V) to CPU

(20pF @2.5V) (2.5V CPU is late)

250

400

ps