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M54HC148D Fiches technique(PDF) 5 Page - STMicroelectronics

No de pièce M54HC148D
Description  RAD-HARD 8 TO 3 LINE PRIORITY ENCODER
PDF  10 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M54HC148D Fiches technique(HTML) 5 Page - STMicroelectronics

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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 xVCC xfIN +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
15
19
22
6.0
7
13
16
19
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
10
10
10
pF
CPD
Power Dissipation
Capacitance (note
1)
5.0
60
pF



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