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參數(shù)資料
| 型號(hào)： | 74F219SCX |
| 英文描述： | x4 SRAM |
| 中文描述： | x4的SRAM |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大小： | 71K |
| 代理商： | 74F219SCX |
www.fairchildsemi.com
4
7
AC Electrical Characteristics
AC Operating Requirements
Symbol
Parameter
T
A
=
+
25
°
C
V
CC
=
+
5.0V
C
L
=
50 pF
Typ
18.5
13.5
6.0
T
A
=
55
°
C to
+
125
°
C
V
CC
=
+
5.0V
C
L
=
50 pF
Min
9.0
8.0
3.5
T
A
=
0
°
C to
+
70
°
C
V
CC
=
+
5.0V
C
L
=
50 pF
Min
10.0
8.0
3.5
Units
Min
10.0
8.0
3.5
Max
26.0
19.0
8.5
Max
32.0
23.0
10.5
Max
27.0
20.0
9.5
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Access Time, HIGH or LOW
A
n
to O
n
Access Time, HIGH or LOW
ns
ns
CS to O
n
Disable Time, HIGH or LOW
CS to O
n
Write Recovery Time
HIGH or LOW, WE to O
n
Disable Time, HIGH or LOW
5.0
2.0
3.0
9.0
4.0
5.5
13.0
6.0
8.0
5.0
2.0
2.5
15.0
8.0
10.0
5.0
2.0
3.0
14.0
7.0
9.0
6.5
6.5
4.0
20.0
11.0
7.0
28.0
15.5
10.0
6.5
6.5
3.5
37.5
17.5
12.0
6.5
6.5
4.0
29.0
16.5
11.0
ns
WE to O
n
5.0
9.0
13.0
5.0
15.0
5.0
14.0
Symbol
Parameter
T
A
=
+
25
°
C
V
CC
=
+
5.0V
Min
0
T
A
=
55
°
C to
+
125
°
C
V
CC
=
+
5.0V
Min
0
T
A
=
0
°
C to
+
70
°
C
V
CC
=
+
5.0V
Min
0
Units
Max
Max
Max
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
S
(L)
Setup Time, HIGH or LOW
ns
A
n
to WE
Hold Time, HIGH or LOW
A
n
to WE
Setup Time, HIGH or LOW
D
n
to WE
Hold Time, HIGH or LOW
0
0
0
2.0
2.0
2.0
2.0
2.0
2.0
10.0
10.0
0
11.0
11.0
2.0
10.0
10.0
0
ns
D
n
to WE
Setup Time, LOW
0
2.0
0
0
0
0
ns
CS to WE
Hold Time, LOW
CS to WE
t
H
(L)
6.0
7.5
6.0
t
W
(L)
WE Pulse Width, LOW
6.0
15.0
6.0
ns
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