參數(shù)資料
型號: HYB18T512160AF-3S
廠商: INFINEON TECHNOLOGIES AG
英文描述: 512-Mbit DDR2 SDRAM
中文描述: 512兆位DDR2 SDRAM的
文件頁數(shù): 80/117頁
文件大?。?/td> 2102K
代理商: HYB18T512160AF-3S
HYB18T512[40/80/16]0AF–[3/3S/3.7/5]
512-Mbit DDR2 SDRAM
AC & DC Operating Conditions
Data Sheet
80
Rev. 1.3, 2005-01
09112003-SDM9-IQ3P
Figure 65
Differential DC and AC Input and Output Logic Levels Diagram
Table 30
Symbol
V
IN(dc)
V
ID(dc)
V
ID(ac)
V
IX(ac)
Differential DC and AC Input and Output Logic Levels
Parameter
DC input signal voltage
DC differential input voltage
AC differential input voltage
AC differential cross point input
voltage
AC differential cross point output
voltage
Min.
–0.3
0.25
0.5
0.5
×
V
DDQ
– 0.175
Max.
V
DDQ
+ 0.3
V
DDQ
+ 0.6
V
DDQ
+ 0.6
0.5
×
V
DDQ
+ 0.175
Unit
V
V
Note
1)
1)
V
IN(dc)
specifies the allowable DC execution of each input of differential pair such as CK, CK, DQS, DQS etc.
2)
V
ID(dc)
specifies the input differential voltage
V
TR
V
CP
required for switching. The minimum value is equal to
V
IH(dc)
V
IL(dc)
.
3)
V
ID(ac)
specifies the input differential voltage
V
TR
V
CP
required for switching. The minimum value is equal to
V
IH(ac)
V
IL(ac)
.
4) The value of
V
IX(ac)
is expected to equal 0.5
×
V
DDQ
of the transmitting device and
V
IX(ac)
is expected to track variations in
V
DDQ
.
V
IX(ac)
indicates the voltage at which differential input signals must cross.
5) The value of
V
OX(ac)
is expected to equal 0.5
×
V
DDQ
of the transmitting device and
V
OX(ac)
is expected to track variations in
V
DDQ
.
V
OX(ac)
indicates the voltage at which differential input signals must cross.
2)
3)
4)
V
OX(ac)
0.5
×
V
DDQ
– 0.125
0.5
×
V
DDQ
+ 0.125
V
5)
Crossing Point
VDDQ
VSSQ
VID
VIX or VOX
VTR
VCP
SSTL18_3
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