WV3EG264M64EFSU-D4 datasheet(5/11 Pages) WEDC

Part #	WV3EG264M64EFSU-D4

Description	1GB - 2x64Mx64 DDR SDRAM UNBUFFERED

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Manufacturer	WEDC [White Electronic Designs Corporation]

Direct Link	http://www.whiteedc.com

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White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs WV3EG264M64EFSU-D4

August 2005

Rev. 0

PRELIMINARY

AC OPERATING TEST CONDITIONS

Parameter/Condition

Symbol

Min

Max

Unit

Note

Input High (Logic 1) Voltage

VIH(AC)

VREF +0.31

V

1

Input Low (Logic 0) Voltage

VIL(AC)

VREF -0.31

V

1

Input Differential Voltage, CK and CK# inputs

VID(AC)

0.7

VCCQ+0.6

V

Input Crossing Point Voltage, CK and CK# inputs

VIX(AC)

0.5*VCCQ-0.2

0.5*VCCQ+0.2

V

NOTES:

1. VIH overshoot: VIH = VCCQ +1.5V for a pulse width < 3ns and the pulse can not be greater than 1/3 of the cycle rate.

VIL undershoot: VIL = -1.5V for a pulse width < 3ns and the pulse can not be greater than 1/3 of the cycle rate.

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