W3H32M72E-XSBX Datasheet, PDF (24/30 Pages) White Electronic Designs Corporation – 32M x 72 DDR2 SDRAM 208 PBGA Multi-Chip Package

White Electronic Designs
W3H32M72E-XSBX
PRELIMINARY*
Parameter
Input High (Logic 1) Voltage
Input Low (Logic 0) Voltage
INPUT DC LOGIC LEVEL
All voltages referenced to VSS
Symbol
Min
Max
Unit
VIH(DC)
VREF + 0.1 25
VCCQ + 0.300
V
VIL(DC)
-0.300
VREF - 0.125
V
INPUT AC LOGIC LEVEL
All voltages referenced to VSS
Parameter
Symbol
Min
Max
Unit
AC Input High (Logic 1) Voltage DDR2-400 & DDR2-533
VIH(AC)
VREF + 0.250
—
V
AC Input High (Logic 1) Voltage DDR2-667
VIH(AC)
VREF + 0.200
—
V
AC Input Low (Logic 0) Voltage DDR2-400 & DDR2-533
VIL(AC)
—
VREF - 0.250
V
AC Input Low (Logic 0) Voltage DDR2-667
VIL(AC)
—
VREF - 0.200
V
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
February 2006
Rev. 2
24
White Electronic Designs Corporation • [phone] • www.wedc.com