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M54HC251 Arkusz danych(PDF) 5 Page - STMicroelectronics

Numer części M54HC251
Szczegółowy opis  8 BIT SIPO SHIFT REGISTER
PDF  11 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M54HC251 Arkusz danych(HTML) 5 Page - STMicroelectronics

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AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns)
Symbol
Parameter
Test Conditions
Value
Unit
VCC
(V)
TA =25
oC
54HC and 74HC
-40 to 85
oC
74HC
-55 to 125
oC
54HC
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
(D - Y, W)
2.0
64
130
165
195
ns
4.5
16
26
33
39
6.0
14
22
28
33
tPLH
tPHL
Propagation
Delay Time
(A, B, C - Y, W)
2.0
80
160
200
240
ns
4.5
20
32
40
48
6.0
17
27
34
41
tPZL
tPZH
Output Enable
Time
2.0
RL =1 K
Ω
36
90
115
135
ns
4.5
11
18
23
27
6.0
9
152023
tPLZ
tPHZ
Output Disable
Time
2.0
RL =1 K
Ω
26
85
105
130
ns
4.5
13
17
21
26
6.0
11
14
18
22
CIN
Input Capacitance
5
10
10
10
pF
CPD (*)
Power Dissipation
Capacitance
62
pF
(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD
•VCC •fIN +ICC
TEST WAVEFORM ICC (Opr.)
* INPUT WAVEFORM TIME IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST.
M54/M74HC251
5/11



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