MM74HC138N 데이터 시트보기 (PDF) - Fairchild Semiconductor
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MM74HC138N 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
tPLH
tPHL
tPHL, tPLH
tPHL
tPLH
Maximum Propagation
Delay, Binary Select to any Output
Maximum Propagation
Delay, Binary Select to any Output
Maximum Propagation
Delay, G1 to any Output
Maximum Propagation
Delay G2A or G2B to
Output
Maximum Propagation
Delay G2A or G2B to Output
Conditions
Guaranteed
Typ
Units
Limit
18
25
ns
28
35
ns
18
25
ns
23
30
ns
18
25
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
Typ
Guaranteed Limits
tPLH
Maximum Propagation
Delay Binary Select to
2.0V
75
150
189
4.5V
15
30
38
any Output LOW-to-HIGH
6.0V
13
26
32
tPHL
Maximum Propagation
Delay Binary Select to any
2.0V
100
200
252
4.5V
20
40
50
Output HIGH-to-LOW
6.0V
17
34
43
tPHL, tPLH Maximum Propagation
Delay G1 to any
2.0V
75
150
189
4.5V
15
30
38
Output
6.0V
13
26
32
tPHL
Maximum Propagation
Delay G2A or G2B to
2.0V
82
175
221
4.5V
28
35
44
Output
6.0V
22
30
37
tPLH
Maximum Propagation
Delay G2A or G2B to
2.0V
75
150
189
4.5V
15
30
38
Output
6.0V
13
26
32
tTLH, tTHL
Output Rise and
Fall Time
2.0V
30
75
95
4.5V
8
15
19
6.0V
7
13
16
CIN
Maximum Input
Capacitance
3
10
10
CPD
Power Dissipation
(Note 6)
75
Capacitance
Note 6: 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.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
pF
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