M74HC258 Просмотр технического описания (PDF) - STMicroelectronics
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M74HC258 Datasheet PDF : 12 Pages
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M74HC258
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
Test Condition
Value
Symbol
Parameter
tTLH tTHL Output Transition
Time
tPLH tPHL Propagation Delay
Time
(A, B - Y)
tPLH tPHL Propagation Delay
Time
(SELECT - Y)
tPZL tPZH High Impedance
Output Enable
Time
tPLZ tPHZ High Impedance
Output Disable
Time
VCC
(V)
2.0
4.5 50
6.0
2.0
4.5 50
6.0
2.0
4.5 150
6.0
2.0
4.5 50
6.0
2.0
4.5 150
6.0
2.0
4.5 50
6.0
2.0
4.5 150
6.0
2.0
4.5 50
6.0
RL = 1 KΩ
RL = 1 KΩ
RL = 1 KΩ
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
25 60
75
90
7 12
15
19 ns
6 10
13
15
45 100
125
150
13 20
25
30 ns
11 17
21
26
62 140
175
210
18 28
35
42 ns
15 24
30
36
45 100
125
150
13 20
25
30 ns
11 17
21
26
62 140
175
210
18 28
35
42 ns
15 24
30
36
40 110
140
165
12 22
28
33 ns
10 19
24
28
57 150
190
225
17 30
38
45 ns
14 26
32
38
28 140
175
210
14 28
35
42 ns
13 24
30
36
CAPACITIVE CHARACTERISTICS
Test Condition
Value
Symbol
Parameter
VCC
(V)
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
CIN
COUT
CPD
Input Capacitance
Output
Capacitance
Power Dissipation
Capacitance (note
1)
5 10
10
10 pF
10
pF
47
pF
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per
Channel)
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