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M74HC148M1R 数据表(PDF) 5 Page - STMicroelectronics

部件名 M74HC148M1R
功能描述  8 TO 3 LINE PRIORITY ENCODER
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M74HC148M1R 数据表(HTML) 5 Page - STMicroelectronics

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M74HC148
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AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
CAPACITIVE CHARACTERISTICS
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
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
tTLH tTHL Output Transition
Time
2.0
30
75
95
110
ns
4.5
8
151922
6.0
7
131619
tPLH tPHL Propagation Delay
Time (In - A0, A1,
A2)
2.0
60
150
190
225
ns
4.5
19
30
38
45
6.0
16
26
32
38
tPLH tPHL Propagation Delay
Time (In - EO, GS)
2.0
60
150
190
225
ns
4.5
19
30
38
45
6.0
16
26
32
38
tPLH tPHL Propagation Delay
Time ( EI -EO)
2.0
40
115
145
175
ns
4.5
14
23
29
35
6.0
12
20
25
30
tPLH tPHL Propagation Delay
Time (EI -GS)
2.0
40
115
145
175
ns
4.5
14
23
29
35
6.0
12
20
25
30
tPLH tPHL Propagation Delay
Time (EI - A0, A1,
A2)
2.0
40
115
145
175
ns
4.5
14
23
29
35
6.0
12
20
25
30
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
CIN
Input Capacitance
5.0
5
101010
pF
CPD
Power Dissipation
Capacitance (note
1)
5.0
60
pF


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