DM74LS373N 查看數據表（PDF） - Fairchild Semiconductor
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DM74LS373N
Fairchild Semiconductor
DM74LS373N Datasheet PDF : 8 Pages
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DM74LS373 Switching Characteristics
at VCC = 5V and TA = 25°C
Symbol
Parameter
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZH
Output Enable Time
to HIGH Level Output
tPZL
Output Enable Time
to LOW Level Output
tPHZ
Output Disable Time
from HIGH Level Output (Note 6)
tPLZ
Output Disable Time
from LOW Level Output (Note 6)
Note 6: CL = 5 pF.
From (Input)
To (Output)
Data to Q
Data to Q
Enable to Q
Enable to Q
Output Control to Any Q
Output Control to Any Q
Output Control to Any Q
Output Control to Any Q
RL = 667Ω
CL = 45 pF
CL = 150 pF
Min
Max
Min
Max
18
26
18
27
30
38
30
36
28
36
36
50
20
25
Units
ns
ns
ns
ns
ns
ns
ns
ns
DM74LS374 Recommended Operating Conditions
Symbol
Parameter
Min
VCC
Supply Voltage
4.75
VIH
HIGH Level Input Voltage
2
VIL
LOW Level Input Voltage
IOH
HIGH Level Output Current
IOL
LOW Level Output Current
tW
Pulse Width
Clock HIGH
15
(Note 8)
Clock LOW
15
tSU
Data Setup Time (Note 7) (Note 8)
20↑
tH
Data Hold Time (Note 7) (Note 8)
1↑
TA
Free Air Operating Temperature
0
Note 7: The symbol (↑) indicates the rising edge of the clock pulse is used for reference.
Note 8: TA = 25°C and VCC = 5V.
Nom
5
Max
5.25
0.8
−2.6
24
70
Units
V
V
V
mA
mA
ns
ns
ns
°C
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