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
DM54173
DM74173
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
b
I
I
2
5.2
16
25
mA
mA
MHz
OH
OL
16
25
f
t
0
0
CLK
W
Pulse Width
(Note 4)
Clock
Clear
Enable
Data
20
20
17
10
2
20
20
17
10
2
ns
ns
t
t
t
Setup Time
(Note 4)
SU
H
Hold Time
(Note 4)
Enable
Data
ns
ns
10
10
10
10
0
Clear Release Time (Note 4)
REL
b
T
A
Free Air Operating Temperature
55
125
70
C
§
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
Max, V
5.5V
I
CC
I
1
mA
Input Voltage
e
e
e
e
e
I
I
I
High Level Input Current
Low Level Input Current
V
V
Max, V
Max, V
Max, V
2.4V
0.4V
40
mA
IH
CC
I
b
1.6
mA
IL
CC
I
e
2.4V
Off-State Output Current with High
Level Output Voltage Applied
V
V
OZH
CC
O
40
mA
mA
e
e
Max
Min, V
IL
IH
e
e
0.4V
I
I
Off-State Output Current with Low
Level Output Voltage Applied
V
V
Max, V
O
OZL
OS
CC
b
40
e
e
Max
Min, V
IH
IL
e
(Note 2)
b
b
b
b
Short Circuit
V
CC
Max
DM54
DM74
30
30
70
70
mA
mA
Output Current
e
CC
I
Supply Current
V
Max (Note 3)
50
72
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: I is measured with all outputs open, CLEAR grounded after a momentary connection to 4.5V: N, G1, G2 and all DATA inputs grounded: and the CLOCK
CC
input and M input at 4.5V.
e
e
5V.
Note 4: T
25 C and V
§
A
CC
2
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