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
54A
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
5495A
DM7495
Nom
5
Symbol
Parameter
Units
Min
4.5
2
Nom
Max
Min
4.75
2
Max
V
V
V
Supply Voltage
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)
Clock Pulse Width (Note 4)
Data Setup Time (Note 4)
IH
0.8
0.8
V
IL
b
b
I
I
0.8
0.8
16
25
mA
mA
MHz
ns
OH
OL
16
f
t
t
t
0
25
0
CLK
W
15
20
20
15
0
11
10
15
20
20
15
0
10
ns
SU
EN
Time to Enable
Clock (Note 4)
Clock 1
Clock 2
ns
b
b
10
t
t
Data Hold Time (Note 4)
10
ns
ns
H
Time to Inhibit Clock 1
or Clock 2 (Note 4)
IN
10
10
0
T
A
Free Air Operating
Temperature
b
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
3.4
0.2
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
I
I
V
Max, V
5.5V
I
CC
1
mA
mA
Input Voltage
e
2.4V
High Level Input
Current
V
V
Max
Mode
Others
Mode
Others
DM54
DM74
80
40
IH
CC
e
I
e
0.4V
b
I
I
I
Low Level Input
Current
V
V
Max
3.2
1.6
IL
CC
mA
e
I
b
e
(Note 2)
b
b
b
b
Short Circuit
V
CC
Max
18
18
57
57
OS
mA
mA
Output Current
e
Supply Current
V
CC
Max (Note 3)
50
75
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 and serial input open; A, B, C, and D inputs grounded: Mode Control at 4.5V: and a momentary 3V, then ground, applied to
CC
both clock inputs.
e
e
5V.
Note 4: T
25 C and V
§
A
CC
2
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