參數(shù)資料
型號(hào): HD74AC538
廠(chǎng)商: Hitachi,Ltd.
英文描述: 1-of-8 Decoder with 3-State Output
中文描述: 1 - 8解碼器,三態(tài)輸出
文件頁(yè)數(shù): 5/10頁(yè)
文件大?。?/td> 68K
代理商: HD74AC538
HD74AC538
5
AC Characteristics: HD74AC538
Ta = +25
°
C
C
L
= 50 pF
Min
Ta = –40
°
C to +85
°
C
C
L
= 50 pF
Min
Item
Symbol
V
CC
(V)*
1
3.3
Typ
Max
Max
Unit
Propagation delay
t
PLH
1.0
10.5
17.5
1.0
20.0
ns
A
n
to O
n
Propagation delay
5.0
1.0
8.0
12.5
1.0
14.0
t
PHL
3.3
1.0
9.5
17.5
1.0
20.0
ns
A
n
to O
n
Propagation delay
E
1
, or
E
2
to O
n
Propagation delay
E
1
, or
E
2
to O
n
Propagation delay
E
3
, or
E
4
to O
n
Propagation delay
E
3
, or
E
4
to O
n
Propagation delay
5.0
1.0
7.0
12.0
1.0
14.0
t
PLH
3.3
1.0
11.0
19.5
1.0
23.0
ns
5.0
1.0
8.0
14.5
1.0
16.5
t
PHL
3.3
1.0
10.0
19.5
1.0
23.0
ns
5.0
1.0
8.0
14.0
1.0
16.5
t
PLH
3.3
1.0
11.0
19.5
1.0
23.0
ns
5.0
1.0
8.5
14.5
1.0
17.0
t
PHL
3.3
1.0
10.5
20.0
1.0
23.5
ns
5.0
1.0
8.0
15.0
1.0
18.0
t
PLH
3.3
1.0
10.5
15.5
1.0
17.5
ns
P to O
n
Propagation delay
5.0
1.0
9.0
11.0
1.0
12.5
t
PHL
3.3
1.0
9.0
15.0
1.0
17.0
ns
P to O
n
Propagation delay
OE
n
to O
n
Propagation delay
OE
n
to O
n
Propagation delay
OE
n
to O
n
Propagation delay
OE
n
to O
n
Note:
1. Voltage Range 3.3 is 3.3 V
±
0.3 V
Voltage Range 5.0 is 5.0 V
±
0.5 V
5.0
1.0
7.5
10.5
1.0
11.5
t
PZH
3.3
1.0
7.0
14.0
1.0
15.5
ns
5.0
1.0
5.0
8.5
1.0
9.5
t
PZL
3.3
1.0
8.5
16.5
1.0
19.0
ns
5.0
1.0
5.5
9.5
1.0
11.5
t
PHZ
3.3
1.0
7.0
14.0
1.0
15.5
ns
5.0
1.0
6.0
10.5
1.0
11.5
t
PLZ
3.3
1.0
9.0
14.5
1.0
17.0
ns
5.0
1.0
7.0
10.5
1.0
12.0
Capacitance
Item
Symbol
Typ
Unit
Condition
Input capacitance
C
IN
C
PD
4.5
pF
V
CC
= 5.5 V
V
CC
= 5.0 V
Power dissipation capacitance
100
pF
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