MM74HC245A データシートの表示（PDF） - Fairchild Semiconductor
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MM74HC245A Datasheet PDF : 8 Pages
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AC Electrical Characteristics
VCC 5V, TA 25qC, tr tf 6ns
Symbol
Parameter
Conditions
tPHL, tPLH
tPZH, tPZL
tPHZ, tPLZ
Maximum Propagation Delay
Maximum Output Enable
Time
Maximum Output Disable
Time
CL 45 pF
RL 1 k:
CL 45 pF
RL 1 k:
CL 5 pF
Guaranteed
Typ
Units
Limit
12
17
ns
24
35
ns
18
25
ns
AC Electrical Characteristics
VCC 2.0V to 6.0V, CL 50 pF, tr tf 6ns (unless otherwise specified)
Symbol
Parameter
Conditions
VCC
tPHL,
tPLH
Maximum Propagation
Delay
tPZH,
tPZL
Maximum Output Enable
Time
tPHZ,
tPLZ
Maximum Output Disable
Time
tTLH, tTHL Output Rise and Fall Time
CL 50 pF
CL 150 pF
CL 50 pF
CL 150 pF
CL 50 pF
CL 150 pF
RL 1 k:
CL 50 pF
CL 150 pF
CL 50 pF
CL 150 pF
CL 50 pF
CL 150 pF
RL 1 k:
CL 50 pF
CL 50 pF
2.0V
2.0V
4.5V
4.5V
6.0V
6.0V
2.0V
2.0V
4.5V
4.5V
6.0V
6.0V
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
TA 25qC
Typ
31
90
41
96
13
18
17
22
11
15
14
19
71
190
81
240
26
38
31
48
21
32
25
41
39
135
20
27
18
23
20
60
6
12
5
10
TA
40 to 85qC TA
55 to 125qC
Units
Guaranteed Limits
113
135
ns
116
128
ns
23
27
ns
28
33
ns
19
23
ns
23
28
ns
240
285
ns
300
360
ns
48
57
ns
60
72
ns
41
48
ns
51
61
ns
169
203
ns
34
41
ns
29
34
ns
75
90
ns
15
18
ns
13
15
ns
CPD
CIN
CIN/OUT
Power Dissipation
Capacitance (Note 5)
Maximum Input Capacitance
Maximum Input/Output
Capacitance, A or B
G VIL
G VIH
50
5
5
10
10
15
20
20
pF
pF
10
pF
20
pF
Note 5: CPD determines the no load dynamic power consumption, PD CPD VCC2 fICC VCC, and the no load dynamic current consumption, IS CPDVCCfICC.
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