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M54HC257M1R Datasheet(PDF) 6 Page - STMicroelectronics

Part # M54HC257M1R
Description  HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE
PDF  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M54HC257M1R Datasheet(HTML) 6 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)
CL
(pF)
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
50
25
60
75
90
ns
4.5
7
121519
6.0
6
101315
tPLH
tPHL
Propagation
Delay Time
(A, B - Y)
2.0
50
45
100
125
150
ns
4.5
13
20
25
30
6.0
11
17
21
26
2.0
150
62
140
175
210
ns
4.5
18
28
35
42
6.0
15
24
30
36
tPLH
tPHL
Propagation
Delay Time
(SELECT - Y)
2.0
50
45
100
125
150
ns
4.5
13
20
25
30
6.0
11
17
21
26
2.0
150
62
140
175
210
ns
4.5
18
28
35
42
6.0
15
24
30
36
tPZL
tPZH
Output Enable
Time
2.0
50
RL =1 K
Ω
40
110
140
165
ns
4.5
12
22
28
33
6.0
10
19
24
28
2.0
150
RL =1 K
Ω
57
150
190
225
ns
4.5
17
30
38
45
6.0
14
26
32
38
tPLZ
tPHZ
Output Disable
Time
2.0
50
RL =1 K
Ω
28
140
175
210
ns
4.5
14
28
35
42
6.0
13
24
30
36
CIN
Input Capacitance
5
10
10
10
pF
COUT
Output
Capacitance
10
pF
CPD (*)
Power Dissipation
Capacitance
47
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/4 (per Channel)
M54/M74HC257/258
6/12



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