MM74HC139 查看數據表（PDF） - Fairchild Semiconductor
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MM74HC139 Datasheet PDF : 8 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, Binary Select to any Output
4 levels of delay
Maximum Propagation
Delay, Binary Select to any Output
5 levels of delay
Maximum Propagation
Delay, Enable to any Output
Conditions
Guaranteed
Typ
Units
Limit
18
30
ns
28
38
ns
19
30
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 Binary Select to
(Note 6)
2.0V
110
175
219
4.5V
22
35
44
254
51
ns
any Output 4 levels of delay
6.0V
18
30
38
44
tPHL, tPLH Maximum Propagation
Delay Binary Select to any
(Note 7)
2.0V
165
220
275
4.5V
33
44
55
320
64
ns
Output 5 levels of delay
6.0V
28
38
47
54
tPHL, tPLH Maximum Propagation
Delay Enable to any
2.0V
115
175
219
4.5V
23
35
44
254
51
ns
Output
6.0V
19
30
38
44
tTLH, tTLH Maximum Output Rise
and Fall Time
2.0V
30
75
95
4.5V
8
15
19
110
22
ns
6.0V
7
13
16
19
CIN
Maximum Input
Capacitance
3
10
10
10
pF
CPD
Power Dissipation
(Note 8)
75
pF
Capacitance (Note 8)
Note 6: 4 levels of delay are A to Y1, Y3 and B to Y2, Y3.
Note 7: 5 levels of delay are A to Y0, Y2 and B to Y0, Y1.
Note 8: 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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