74LS37 데이터 시트보기 (PDF) - Fairchild Semiconductor
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74LS37 Datasheet PDF : 8 Pages
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DM74LS374 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level
Output Voltage
VCC = Min, IOH = Max
2.4
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
Output Voltage
VIL = Max, VIH = Min
IOL = 12 mA, VCC = Min
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
IOZH
Off-State Output Current with
VCC = Max, VO = 2.7V
HIGH Level Output Voltage Applied
VIH = Min, VIL = Max
IOZL
Off-State Output Current with
VCC = Max, VO = 0.4V
LOW Level Output Voltage Applied
VIH = Min, VIL = Max
IOS
Short Circuit Output Current
VCC = Max (Note 10)
−50
ICC
Supply Current
VCC = Max, Dn = GND, OC = 4.5V
Note 9: All typicals are at VCC = 5V, TA = 25°C.
Note 10: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Typ
(Note 9)
3.1
0.35
0.25
27
Max
−1.5
0.5
0.4
0.1
20
−0.4
20
−20
−225
45
DM74LS374 Switching Characteristics
at VCC = 5V and TA = 25°C
Symbol
Parameter
fMAX
tPLH
Maximum Clock Frequency
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 11)
tPLZ
Output Disable Time
from LOW Level Output (Note 11)
Note 11: CL = 5 pF.
RL = 667Ω
CL = 45 pF
CL = 150 pF
Min
Max
Min
Max
35
20
28
32
28
38
28
44
28
44
20
25
Units
V
V
V
mA
µA
mA
µA
µA
mA
mA
Units
MHz
ns
ns
ns
ns
ns
ns
5
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