參數(shù)資料
型號(hào): 74AC259
廠商: ON SEMICONDUCTOR
英文描述: 8−Bit Addressable Latch
文件頁數(shù): 6/11頁
文件大?。?/td> 130K
代理商: 74AC259
MC74AC259, MC74ACT259
http://onsemi.com
6
AC CHARACTERISTICS
(For Figures and Waveforms See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)
Symbol
Parameter
V
CC
*
(V)
74AC
74AC
Unit
Fig.
No.
T
A
= +25
°
C
C
L
= 50 pF
T
A
= 40
°
C
to +85
°
C
C
L
= 50 pF
Min
Typ
Max
Min
Max
t
PLH
Propagation Delay
D
n
to Q
n
Propagation Delay
D
n
to Q
n
Propagation Delay
E to Q
n
Propagation Delay
E to Q
n
Propagation Delay
Address to Q
n
Propagation Delay
Address to Q
n
Propagation Delay
MR to Q
3.3
5.0
2.0
2.0
9.0
6.5
14.5
10.0
1.5
1.5
17.0
11.5
ns
35
t
PHL
3.3
5.0
2.0
2.0
9.0
6.0
13.5
9.5
1.5
1.5
16.0
11.0
ns
35
t
PLH
3.3
5.0
2.0
2.0
10.5
7.0
15.0
10.5
1.5
1.5
17.5
12.5
ns
36
t
PHL
3.3
5.0
2.0
2.0
8.0
7.5
12.5
9.0
1.5
1.5
15.0
11.0
ns
36
t
PLH
3.3
5.0
2.0
2.0
12.0
8.0
19.0
13.0
1.5
1.5
22.5
15.5
ns
36
t
PHL
3.3
5.0
2.0
2.0
10.0
7.0
16.0
11.0
1.5
1.5
19.0
13.0
ns
36
t
PHL
3.3
5.0
2.0
2.0
8.0
6.0
12.0
9.0
1.5
1.5
13.5
10.0
ns
37
*Voltage Range 3.3 V is 3.3 V
±
0.3 V.
*Voltage Range 5.0 V is 5.0 V
±
0.5 V.
AC OPERATING REQUIREMENTS
Symbol
Parameter
V
CC
*
(V)
74AC
74AC
Unit
Fig.
No.
T
A
= +25
°
C
C
L
= 50 pF
T
A
= 40
°
C to +85
°
C
C
L
= 50 pF
Typ
Guaranteed Minimum
t
s
Setup Time, HIGH or LOW
D
n
to E
Hold Time, HIGH or LOW
D
n
to E
Setup Time
Address to E
3.3
5.0
3.5
2.5
4.5
3.5
ns
39
t
h
3.3
5.0
2.5
2.0
2.5
2.0
ns
39
t
s
3.3
5.0
7.0
4.0
9.0
6.0
ns
36
t
h
Hold Time
Address to E
3.3
5.0
2.0
2.0
2.0
2.0
ns
36
t
w
Minimum Pulse
Width MR
3.3
5.0
6.0
5.5
6.5
6.0
ns
36
t
w
Minimum Pulse
Width E
3.3
5.0
6.5
5.5
7.0
6.0
ns
36
*Voltage Range 3.3 V is 3.3 V
±
0.3 V.
*Voltage Range 5.0 V is 5.0 V
±
0.5 V.
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