74HC157 データシートの表示（PDF） - Fairchild Semiconductor
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74HC157 Datasheet PDF : 7 Pages
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AC Electrical Characteristics
VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns
Symbol
Parameter
tPHL, tPLH
tPHL, tPLH
tPHL, tPLH
Maximum Propagation
Delay, Data to Output
Maximum Propagation
Delay, Select to Output
Maximum Propagation
Delay, Strobe to Output
Conditions
Guaranteed
Typ
Units
Limit
14
20
ns
14
20
ns
12
18
ns
AC Electrical Characteristics
CL = 50 pF, tr = tf = 6 ns (unless otherwise specified)
Symbol
Parameter
Conditions
VCC
TA = 25°C
TA = −40 to 85°C TA = −55 to 125°C Units
Typ
Guaranteed Limits
tPHL, tPLH Maximum Propagation
Delay, Data to Output
2.0V
63
125
158
4.5V
13
25
32
186
ns
37
ns
6.0V
11
21
27
32
ns
tPHL, tPLH Maximum Propagation
Delay, Select to Output
2.0V
63
125
158
4.5V
13
25
32
186
ns
37
ns
6.0V
11
21
27
32
ns
tPHL, tPLH Maximum Propagation
Delay, Strobe to Output
2.0V
58
115
145
4.5V
12
23
29
171
ns
34
ns
6.0V
10
20
25
29
ns
tTLH, tTHL Maximum Output Rise
and Fall Time
2.0V
30
75
95
4.5V
8
15
19
110
ns
22
ns
6.0V
7
13
16
19
ns
CIN
Maximum Input
Capacitance
5
10
10
10
pF
CPD
Power Dissipation
(per
57
pF
Capacitance (Note 5)
Multiplexer)
Note 5: CPD determines the no load dynamic power consumption, PD = CPD VCC2f + ICC VCC, and the no load dynamic current consumption,
IS = CPD VCC f + ICC.
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