參數(shù)資料
型號: 74ACT253
廠商: National Semiconductor Corporation
英文描述: Dual 4-Input Multiplexer with TRI-STATE Outputs
中文描述: 雙路4輸入多路復(fù)用器與三態(tài)輸出
文件頁數(shù): 6/8頁
文件大小: 153K
代理商: 74ACT253
AC Electrical Characteristics
54AC
V
CC
(V)
T
A
= 55C
to +125C
C
L
= 50 pF
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Fig.
No.
Symbol
Parameter
Units
(Note 8)
Max
18.0
12.5
18.5
13.5
17.0
11.5
15.0
11.5
9.0
7.0
9.5
8.0
10.5
9.0
9.5
8.0
t
PLH
Propagation Delay
S
n
to Z
n
Propagation Delay
S
n
to Z
n
Propagation Delay
I
n
to Z
n
Propagation Delay
I
n
to Z
n
Output Enable Time
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
ns
t
PHL
ns
t
PLH
ns
t
PHL
ns
t
PZH
ns
t
PZL
Output Enable Time
ns
t
PHZ
Output Disable Time
ns
t
PLZ
Output Disable Time
ns
Note 8:
Voltage Range 3.3 is 3.3V
±
0.3V
Voltage Range 5.0 is 5.0V
±
0.5V
AC Electrical Characteristics
54ACT
T
A
= 55C
to +125C
C
L
= 50 pF
Min
1.0
V
CC
(V)
Fig.
No.
Symbol
Parameter
Units
(Note 9)
Max
14.5
t
PLH
Propagation Delay
S
n
to Z
n
Propagation Delay
S
n
to Z
n
Propagation Delay
I
n
to Z
n
Propagation Delay
I
n
to Z
n
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
5.0
ns
t
PHL
5.0
1.0
16.0
ns
t
PLH
5.0
1.0
12.0
ns
t
PHL
5.0
1.0
13.5
ns
t
PZH
t
PZL
t
PHZ
t
PLZ
5.0
5.0
5.0
5.0
1.0
1.0
1.0
1.0
9.5
9.5
11.0
9.0
ns
ns
ns
ns
Note 9:
Voltage Range 5.0 is 5.0V
±
0.5V
Capacitance
Symbol
Parameter
Typ
4.5
50.0
Units
pF
pF
Conditions
V
CC
= OPEN
V
CC
= 5.0V
C
IN
C
PD
Input Capacitance
Power Dissipation
Capacitance
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