iPEM
4.8 Gb SDRAM-DDR2
Austin Semiconductor, Inc.
AS4DDR264M72PBG
INPUT DC LOGIC LEVEL
All voltages referenced to Vss
Parameter
Symbol
Min
Max
Unit
1
VIH (DC)
VREF + 0.125
VCCQ
Input High (Logic 1) Voltage
V
VIL (DC)
VREF - 0.125
Input Low (Logic 0) Voltage
-0.300
V
Note 1: VCCQ + 300mV allowed provided 1.9V is not exceeded
INPUT AC LOGIC LEVEL
All voltages referenced to Vss
Parameter
Symbol
Min
Max
Unit
1
V
IH (AC)
IH (AC)
VREF + 0.250
VCCQ
AC Input High (Logic 1) Voltage DDR2-400 & DDR2-533
V
1
V
VREF + 0.200
-0.3
VCCQ
AC Input High (Logic 1) Voltage DDR2-667
ACInput Low (Logic 0) Voltage DDR2-400 & DDR2-533
AC Input Low (Logic 0) Voltage DDR2-667
V
V
V
VIL (AC)
VIL (AC)
VREF - 0.250
VREF - 0.200
-0.3
Note 1: VCCQ + 300mV allowed provided 1.9V is not exceeded
Austin Semiconductor, Inc.
●
Austin, Texas
●
512.339.1188
●
www.austinsemiconductor.com
AS4DDR264M72PBG
Rev. 1.5 11/07
22
AUSTIN [ AUSTIN SEMICONDUCTOR ]
