11257-814 Просмотр технического описания (PDF) - AMI Semiconductor
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11257-814 Datasheet PDF : 19 Pages
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April 1999
Figure 14: SDRAM_0:17 Clock Output (3.3V Type 4 Clock Buffer)
Voltage
(V)
0
0.4
0.65
0.85
1
1.4
1.5
1.65
1.8
1.95
3.135
3.6
Low Drive Current (mA)
MIN. TYP. MAX.
0
0
0
23
34
53
35
52
83
43
65
104
49
74
118
61
93
152
64
98
159
67
103
168
70
108
177
72
112
184
72
112
204
112
204
Voltage
(V)
0
1
1.4
1.5
1.65
1.8
2
2.4
2.6
3.135
3.3
3.465
High Drive Current (mA)
MIN. TYP. MAX.
-72
-116 -198
-72
-116 -198
-68
-110 -188
-67
-107 -184
-64
-103 -177
-60
-98
-170
-54
-90
-157
-39
-69
-126
-30
-56
-107
0
-15
-46
0
-23
0
220
200
180
160
140
120
100
80
6
Ã
60
40
r 20
0
Ã8 -20 0
0.5
1
1.5
2
2.5
3
3.5
4
-40
-60
P -80
-100
-120
-140
-160
MIN.
-180
TYP.
-200
MAX.
-220
30 Ω
PÃWyhtrÃW
50 Ω
90 Ω
Figure 15: DC Measurement Points
3.3V
VOH 3.3 = 2.4V
1.5V
VOL 3.3 = 0.4V
(device
interface)
VIH 3.3 = 2.0V
VIL 3.3 = 0.8V
(system
interface)
Figure 16: Clock Skew Measurement Point
1.5V
3.3V
tskw
1.5V
3.3V
Figure 17: Timing Measurement Points
τKP
tr
tf
tKH
2.4V
1.5V
tKL
0.4V
Duty Cycle
VDD
50%
50%
VSS
10%
tPLZ
90%
tPHZ
50%
VOL
tPZL
VOH
50%
tPHZ
4.5.99
,62
13
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