m74hc259 STMicroelectronics, m74hc259 Datasheet - Page 5

• Manufacturer Part Number: m74hc259
• Description: 8 Bit Addressable Latch
• Manufacturer: STMicroelectronics

AC ELECTRICAL CHARACTERISTICS (C
CAPACITIVE CHARACTERISTICS
1) C
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
t
t
t
t
t
Symbol
Symbol
TLH
PLH
PLH
PLH
PLH
t
C
t
PD
W(L)
C
W(L)
t
t
t
t
PD
s
s
h
h
IN
t
t
t
t
t
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
PHL
PHL
PHL
THL
PHL
Output Transition
Time
Propagation Delay
Time
(DATA - Q)
Propagation Delay
Time
(A, B, C - Q)
Propagation Delay
Time
(G - Q)
Propagation Delay
Time
(CLEAR - Q)
Minimum Pulse
Width (ENABLE)
Minimum Pulse
Width (CLEAR)
Minimum Set-up
Time (DATA)
Minimum Set-up
Time (A, B, C)
Minimum Hold
Time (DATA)
Minimum Hold
Time (A, B, C)
Input Capacitance
Power Dissipation
Capacitance (note
1)
Parameter
Parameter
V
V
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
(V)
5.0
5.0
CC
CC
Test Condition
Test Condition
L
= 50 pF, Input t
Min.
Min.
T
T
A
A
r
Typ.
Typ.
= 25°C
= 25°C
30
56
18
15
76
24
20
57
19
16
45
15
13
28
24
12
66
= t
8
7
7
6
6
5
3
3
5
f
= 6ns)
Max.
Max.
140
190
150
115
75
15
13
28
24
38
32
30
26
23
20
75
15
13
75
15
13
50
10
25
10
9
5
5
5
5
5
0
0
0
Value
Value
-40 to 85°C
Min.
-40 to 85°C
Min.
CC(opr)
= C
Max.
Max.
175
240
190
145
95
19
16
35
30
48
41
38
32
29
25
90
19
16
90
19
16
60
12
30
10
11
6
5
5
5
5
0
0
0
PD
x V
-55 to 125°C
-55 to 125°C
Min.
Min.
CC
x f
IN
M74HC259
Max.
Max.
+ I
210
285
225
175
110
115
115
22
19
42
36
57
48
45
38
35
30
23
20
23
20
75
15
13
40
10
8
7
5
5
5
0
0
0
CC
Unit
Unit
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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