Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Supply Voltage
Input Voltage
7V
5.5V
Operating Free Air Temperature Range
DM54 and 54
DM74
b
b
a
55 C to 125 C
§
0 C to 70 C
§
a
§
§
a
65 C to 150 C
Storage Temperature Range
§
§
Recommended Operating Conditions
DM54174
DM74174
Symbol
Parameter
Units
Min
4.5
2
Nom
Max
Min
4.75
2
Nom
Max
V
V
V
Supply Voltage
5
5.5
5
5.25
V
V
CC
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Clock Frequency (Note 4)
IH
0.8
0.8
V
IL
b
0.8
16
b
0.8
16
I
I
mA
mA
MHz
OH
OL
f
0
30
0
30
CLK
W
t
Pulse Width
(Note 4)
Clock Low
25
10
20
20
0
25
10
20
20
0
Clock High
Clear
ns
t
t
t
Data Setup Time (Note 4)
Data Hold Time (Note 4)
ns
ns
ns
SU
H
Clear Release Time (Note 4)
Free Air Operating Temperature
30
30
0
REL
b
T
A
55
125
70
C
§
’174 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 1)
e
e
e b
e
b
1.5
V
V
Input Clamp Voltage
V
Min, I
Min, I
12 mA
V
V
I
CC
I
High Level Output
Voltage
V
V
Max
Min
OH
CC
OH
2.4
e
e
Max, V
IL
IH
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max
CC
OL
0.4
V
e
e
Min, V
Max
IH
IL
@
Input Current Max
e
e
I
V
CC
Max, V
5.5V
I
I
1
mA
Input Voltage
e
e
e
e
e
I
I
I
High Level Input Current
Low Level Input Current
V
V
V
Max, V
Max, V
Max
2.4V
0.4V
40
mA
IH
IL
CC
CC
CC
I
b
1.6
mA
I
b
b
b
b
Short Circuit
DM54
DM74
20
18
57
57
OS
mA
mA
Output Current
(Note 2)
e
CC
I
Supply Current
V
Max (Note 3)
45
65
CC
e
e
25 C.
Note 1: All typicals are at V
5V, T
§
Note 2: Not more than one output should be shorted at a time.
CC
A
Note 3: With all outputs open and all DATA and CLEAR inputs at 4.5V, I
is measured after a momentary ground, then 4.5V applied to the CLOCK input.
CC
e
e
5V.
Note 4: T
25 C and V
§
A
CC
2
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