ICS950902 datasheet(15/20 Pages) ICST

15 / 20 page

Integrated

Circuit

Systems, Inc.

ICS950902

0475G—03/23/04

Electrical Characteristics- SDRAM

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output High Voltage

VOH3

IOH = -28 mA

2.4

Output Low Voltage

VOL3

IOL = 20 mA

0.4

Output High Current

IOH3

VOH = 2.0 V

-40

Output Low Current

IOL3

VOL = 0.8 V

Rise Time1

tr3

VOL = 0.4 V, VOH = 2.4 V @ 100Mhz

1.53

Fall Time1

tf3

VOH = 2.4 V, VOL = 0.4 V @ 100Mhz

1.62

Duty Cycle1

dt3

VT = 1.5 V

50.2

Skew window1

tsk3

VT = 1.5 V

210

250

Propagation Time

1 (Buffer

In to Output)

Tprop

VT = 1.5 V

5.6

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

Electrical Characteristics- DDRT/C

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output High Voltage

VOH3

IOH = -11 mA

2282

Output Low Voltage

VOL3

IOL = 11 mA

0.335

0.4

Output High Current

IOH3

VOH = 2.0 V

-12

Output Low Current

IOL3

VOL = 0.8 V

Rise Time

Tr3

20% to 80%

0.86

2.2

Fall Time

Tf3

80% to 20%

0.65

2.2

Duty Cycle

Dt3

VT = 50%

50.2

Skew (window)

Tsk

VT = 50%

250

Jitter

tjcyc-cyc

VT = 1.5 V

146

250

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

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