MM74HCT540 查看數據表（PDF） - Fairchild Semiconductor
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MM74HCT540 Datasheet PDF : 8 Pages
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AC Electrical Characteristics
MM74HCT541: VCC 5.0V, tr tf 6 ns, TA 25qC, (unless otherwise specified)
Symbol
Parameter
Conditions
tPHL, tPLH
tPZL, tPZH
tPLZ, tPHZ
Maximum Output
Propagation Delay
Maximum Output
Enable Time
Maximum Output
Disable Time
CL 45 pF
CL 45 pF
RL 1 k:
CL 5 pF
RL 1 k:
Guaranteed
Typ
Units
Limits
13
20
ns
17
28
ns
15
25
ns
AC Electrical Characteristics
MM74HCT541: VCC 5.0V r 10%, tr tf 6 ns (unless otherwise specified)
Symbol
Parameter
tPHL, tPLH Maximum Output
Propagation Delay
tPZH, tPZL Maximum Output
Enable Time
tPHZ, tPLZ Maximum Output
Disable Time
tTHL, tTLH Maximum Output
Rise and Fall Time
CIN
Maximum Input
Capacitance
COUT
Maximum Output
Capacitance
Conditions
CL 50 pF
CL 150 pF
RL 1 k:
RL 1 k:
CL 50 pF
CL 5 0 pF
CL 50 pF
CL 150 pF
TA 25qC
Typ
14
23
17
33
17
30
22
40
17
30
TA 40 to 85qC TA 55 to 125qC
Guaranteed Limits
29
34
42
49
38
45
50
60
38
45
6
12
15
18
5
10
10
10
15
20
20
20
CPD
Power Dissipation
(per output) G VCC
12
Capacitance (Note 6)
G GND
45
Note 6: CPD determines the no load dynamic power consumption, PD CPD VCC2 f ICC VCC,and the no load dynamic current consumption,
IS CPD VCC f ICC.
Units
ns
ns
ns
ns
ns
ns
pF
pF
pF
pF
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