MM74HCT244SJ データシートの表示（PDF） - Fairchild Semiconductor
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MM74HCT244SJ Datasheet PDF : 8 Pages
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AC Electrical Characteristics
MM74HCT240, MM74HCT244 VCC 5.0V, tr tf 6 ns, TA 25qC (unless otherwise specified)
Symbol
Parameter
Conditions
Typ
tPHL, tPLH
Maximum Output
CL 45 pF
14
Propagation Delay
tPZL, tPZH
Maximum Output
CL 45 pF
20
Enable Time
RL 1 k:
tPLZ, tPHZ
Maximum Output
CL 5 pF
16
Disable Time
RL 1 k:
Guaranteed
Limits
18
30
25
Units
ns
ns
ns
AC Electrical Characteristics
MM74HCT240, MM74HCT244 VCC
Symbol
Parameter
5.0V r 10%, tr tf 6 ns (unless otherwise specified)
Conditions
TA 25qC
Typ
TA 40 to 85qC TA 55q to 125qC
Guaranteed Limits
tPHL, tPLH Maximum Output
CL 50 pF
14
20
25
30
Propagation Delay
CL 150 pF
20
28
35
42
tPZH, tPZL Maximum Output
RL 1 k:
CL 50 pF
21
30
38
45
Enable Time
CL 150 pF
26
42
53
63
tPHZ, tPLZ Maximum Output
RL 1 k:
16
25
32
38
Disable Time
CL 50 pF
tTHL, tTLH Maximum Output
CL 50 pF
6
12
15
18
Rise and Fall Time
CIN
Maximum Input
Capacitance
10
15
15
15
COUT
Maximum Output
Capacitance
15
20
20
20
CPD
Power Dissipation
(per buffer)
Capacitance (Note 5)
G VCC, G GND
G GND, G VCC
Note 5: CPD determines the no load dynamic power consumption, PD
IS CPD VCC f ICC.
5
90
CPD VCC2 f ICC VCC, and the no load dynamic current consumption,
Units
ns
ns
ns
ns
ns
ns
pF
pF
pF
pF
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