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M54HC7240 Datasheet(PDF) 6 Page - STMicroelectronics

No. de pieza M54HC7240
Descripción Electrónicos  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC7240: INVERTED - HC7241/7244 NON INVERTED
PDF  12 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M54HC7240 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
ns
4.5
7
12
19
6.0
6
10
13
tPLH
tPHL
Propagation
Delay Time
2.0
50
50
125
155
ns
4.5
15
25
31
6.0
13
21
26
tPZL
tPZH
Output Enable
Time
2.0
50
RL =1K
Ω
68
150
190
ns
4.5
21
30
38
6.0
16
26
32
tPLZ
tPHZ
Output Disable
Time
2.0
50
RL =1K
Ω
48
150
190
ns
4.5
21
30
38
6.0
19
26
32
CIN
Input Capacitance
5
10
10
10
pF
COUT
Output
Capacitance
10
pF
CPD (*)
Power Dissipation
Capacitance
HC7240
HC7241/7244
33
34
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/8 (per channel)
TEST CIRCUIT ICC (Opr.)
M54/M74HC7240/7241/7244
6/12



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