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M74HC294 数据表(PDF) 8 Page - STMicroelectronics

部件名 M74HC294
功能描述  PROGRAMMABLE DIVIDER/TIMER
PDF  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M74HC294 数据表(HTML) 8 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
(Q)
2.0
30
75
95
110
ns
4.5
8
151922
6.0
7
131619
tTLH
tTHL
Output Transition
Time
(TP)
2.0
116
225
280
340
ns
4.5
29
45
56
68
6.0
25
38
48
57
tPLH
tPHL
Propagation
Delay Time
(CK - Q)
2.0
for HC292/7292
160
350
440
ns
4.5
46
70
88
105
6.0
39
60
75
90
tPLH
tPHL
Propagation
Delay Time
(CK - Q)
2.0
for HC294/7294
145
330
415
ns
4.5
43
66
83
15
6.0
37
56
71
84
tPHL
Propagation
Delay Time
(CLR - Q)
2.0
for HC292/7292
130
320
400
210
ns
4.5
42
64
80
100
6.0
36
54
68
81
tPHL
Propagation
Delay Time
(CLR - Q)
2.0
for HC294/7294
110
260
325
390
ns
4.5
34
52
65
78
6.0
29
44
55
66
fMAX
Maximum Clock
Frequency
2.0
for HC292/7292
5.0
21
4
3.4
MHz
4.5
27
64
22
18
6.0
32
75
26
21
fMAX
Maximum Clock
Frequency
2.0
for HC294/7294
6.0
20
5
4
MHz
4.5
32
64
26
21
6.0
38
75
31
25
tW(H)
tW(L)
Minimum Pulse
Width
(CLOCK)
2.0
40
75
95
110
ns
4.5
8
151922
6.0
7
131620
tW(L)
Minimum Pulse
Width
(CLEAR)
2.0
for HC292/7292
48
125
155
190
ns
4.5
12
25
31
38
6.0
10
21
26
32
tW(L)
Minimum Pulse
Width
(CLEAR)
2.0
for HC294/7294
40
100
125
150
ns
4.5
10
20
25
30
6.0
9
172126
tREM
Minimum
Removal Time
2.0
for HC292/7292
555
ns
4.5
5
5
5
6.0
5
5
5
tREM
Minimum
Removal Time
2.0
for HC294/7294
000
ns
4.5
0
0
0
6.0
0
0
0
CIN
Input Capacitance
5
10
10
pF
CPD (*)
Power Dissipation
Capacitance
for HC292/7292
for HC294/7294
21
23
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
M54/M74HC292/7292/294/7294
8/14



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