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參數(shù)資料
| 型號(hào)： | CD74AC253E |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Dual 4-Input Multiplexer, Three-State |
| 中文描述： | 雙路4輸入多路復(fù)用器，三態(tài) |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 37K |
| 代理商： | CD74AC253E |
5
ACT Input Load Table
INPUT
UNIT LOAD
S0, S1, nI
0
, nI
1
1
nOE
0.83
NOTE: Unit load is
I
CC
limit specified in DC Electrical Specifications
Table, e.g., 2.4mA max at 25
o
C.
Switching Specifications
Input t
r
, t
f
= 3ns, C
L
= 50pF (Worst Case)
PARAMETER
SYMBOL
V
CC
(V)
-40
o
C TO 85
o
C
-55
o
C TO 125
o
C
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
AC TYPES
Propagation Delay,
S0, S1, to Y
t
PLH
, t
PHL
1.5
-
-
227
-
-
250
ns
3.3
(Note 9)
7.2
-
25
7
-
28
ns
5
(Note 10)
5.2
-
18.2
5
-
20
ns
Propagation Delay,
nI to Y
t
PLH
, t
PHL
1.5
-
-
151
-
-
166
ns
3.3
4.8
-
16.9
4.7
-
18.6
ns
5
3.4
-
12.1
3.3
-
13.3
ns
Propagation Delay,
Output Enable,
Output Disable to Y
t
PLZ
, t
PHZ
,
t
PZL
, t
PZH
1.5
-
-
131
-
-
144
ns
3.3
4.5
-
15.7
4.3
-
17.3
ns
5
3
-
10.5
2.9
-
11.5
ns
Three-State Output
Capacitance
C
O
-
-
-
15
-
-
15
pF
Input Capacitance
C
I
-
-
-
10
-
-
10
pF
Power Dissipation Capacitance
C
PD
(Note 11)
-
-
107
-
-
107
-
pF
ACT TYPES
Propagation Delay,
S0, S1, to Y
t
PLH
, t
PHL
5
(Note 10)
5.7
-
20
5.5
-
22
ns
Propagation Delay,
nI to Y
t
PLH
, t
PHL
5
4.6
-
16.4
4.5
-
18
ns
Propagation Delay,
Output Enable,
Output Disable to Y
t
PLZ
, t
PHZ
,
t
PZL
, t
PZH
5
3.2
-
11.5
3.2
-
12.6
ns
Three-State Output
Capacitance
C
O
-
-
-
15
-
-
15
pF
Input Capacitance
C
I
-
-
-
10
-
-
10
pF
Power Dissipation Capacitance
C
PD
(Note 11)
-
-
107
-
-
107
-
pF
NOTES:
8. Limits tested 100%.
9. 3.3V Min is at 3.6V, Max is at 3V.
10. 5V Min is at 5.5V, Max is at 4.5V.
11. C
PD
is used to determine the dynamic power consumption per multiplexer.
AC: P
D
= V
CC2
f
i
(C
PD
+ C
L
)
ACT: P
D
= V
CC2
f
i
(C
PD
+ C
L
) + V
CC
I
CC
where f
i
= input frequency, C
L
= output load capacitance, V
CC
= supply voltage.
CD74AC253, CD54/74ACT253
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