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M74HC251B1R. Datasheet(PDF) 5 Page - STMicroelectronics

Part # M74HC251B1R.
Description  8-CHANNEL MULTIPLEXER (3-STATE)
PDF  11 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC251B1R. Datasheet(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 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
115
ns
4.5
8
151923
6.0
7
131620
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
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 High Impedance
Output Enable
Time
2.0
RL = 1 KΩ
36
90
115
135
ns
4.5
11
18
23
27
6.0
9
152023
tPLZ tPHZ High Impedance
Output Disable
Time
2.0
RL = 1 KΩ
26
85
105
130
ns
4.5
13
17
21
26
6.0
11
14
18
22
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
62
pF



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