AV9248-90 Просмотр технического описания (PDF) - Integrated Circuit Systems

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AV9248-90

Frequency Generator & Integrated Buffers for PENTIUM/Pro™

Integrated Circuit Systems 

ICS9248 - 90

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

Output High Voltage VOH2B IOH = -12.0 mA

Output Low Voltage VOL2B IOL = 12 mA

Output High Current

IOH2B VOH = 1.7 V

Output Low Current

IOL2B VOL = 0.7 V

Rise Time

tr2B1

VOL = 0.4 V, VOH = 2.0 V

Fall Time

tf2B1

VOH = 2.0 V, VOL = 0.4 V

Duty Cycle

dt2B1 VT = 1.25 V, Freq. < 124 MHz

VT = 1.25 V, Freq. >= 124 MHz

Skew

tsk2B1 VT = 1.25 V

Jitter, One Sigma

Jitter, Absolute

Jitter, Cycle-to-cycle

tj1σ2B1

tjab

1

s2B

tjcy

1

c-cyc2B

VT = 1.25 V

VT = 1.25 V

VT = 1.25 V

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

2

2.3

0.31

-36

19 26

1.1

1.1

45 49

40 47

115

36

-250 130

140

MAX UNITS

V

0.4 V

-19 mA

mA

1.6 ns

1.6 ns

55

%

52

%

175 ps

150 ps

+250 ps

250 ps

Electrical Characteristics - SDRAM

TA = 0 - 70º C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 30 pF (unless otherwise stated)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP

Output High Voltage

Output Low Voltage

Output High Current

Output Low Current

Rise Time

Fall Time

Duty Cycle

Skew1

VOH3

VOL3

IOH3

IOL3

Tr31

Tf31

Dt31

Tsk1

IOH = -25 mA

IOL = 20 mA

VOH = 2.0 V

VOL = 0.8 V

VOL = 0.4 V, VOH = 2.4 V

VOH = 2.4 V, VOL = 0.4 V

VT = 1.5 V

VT = 1.5 V

2.4 2.85

0.35

-60

41 44

1.5

1.6

45 51

220

Propagation Delay

Tprop VT = 1.5 V

2.8

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

MAX UNITS

V

0.4 V

-40 mA

mA

2.4 ns

2.2 ns

55

%

500 ps

4

ns

8

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