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M54HC7640 数据表(PDF) 5 Page - STMicroelectronics

部件名 M54HC7640
功能描述  OCTAL BUS TRANSCEIVER (3-STATE):HC7645 NONINVERTING HC7640 INVERTING ,HC7643 INVERTING/NONINVERTING
PDF  10 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M54HC7640 数据表(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
25
60
75
90
ns
4.5
7
121518
6.0
6
101315
tPLH
tPHL
Propagation
Delay Time
2.0
61
125
156
190
ns
4.5
15
25
31
38
6.0
13
21
27
32
tPZL
tPZH
Output Enable
Time
2.0
RL =1 K
Ω
77
150
188
225
ns
4.5
19
30
38
45
6.0
16
26
32
38
tPLZ
tPHZ
Output Disable
Time
2.0
RL =1 K
Ω
84
150
188
225
ns
4.5
21
30
38
45
6.0
18
26
32
38
CIN
Input Capacitance
5
10
10
10
pF
COUT
Output
Capacitance
pF
CPD (*)
Power Dissipation
Capacitance
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 Gate)
SWITCHING CHARACTERISTICS TEST WAVEFORM
VCC
VCC
GND
GND
M54/M74HC7245/ 7640/7643/7645
5/10



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