Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage 7V
Input Voltage 5.5V
Operating Free Air Temperature Range
54
b
55
§
Cto
a
125
§
C
DM74 0
§
Cto
a
70
§
C
Storage Temperature Range
b
65
§
Cto
a
150
§
C
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 acutual device operation.
Recommended Operating Conditions
Symbol Parameter
5497 DM7497
Units
Min Nom Max Min Nom Max
V
CC
Supply Voltage 4.5 5 5.5 4.75 5 5.25 V
V
IH
High Level Input Voltage 2 2 V
V
IL
Low Level Input Voltage 0.8 0.8 V
I
OH
High Level Output Current
b
0.4
b
0.4 mA
I
OL
Low Level Output Current 16 16 mA
T
A
Free Air Operating Temperature
b
55 125 0 70
§
C
t
s
(L) Setup Time LOW, CE to CP Rising 25 25 ns
t
h
(H) Hold Time HIGH, CE to CP Rising 0 0 ns
t
h
(L) Hold Time LOW, CE to CP Falling 0 0 ns
t
w
(H) CP Pulse Width HIGH 20 20 ns
t
w
(L) CP Pulse Width LOW 20 ns
t
w
(H) MR Pulse Width HIGH 15 15 ns
Electrical Characteristics Over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
Typ
Max Units
(Note 1)
V
I
Input Clamp Voltage V
CC
e
Min, I
I
eb
12 mA
b
1.5 V
V
OH
High Level Output V
CC
e
Min, I
OH
e
Max,
2.4 3.4 V
Voltage V
IL
e
Max
V
OL
Low Level Output V
CC
e
Min, I
OL
e
Max,
0.2 0.4 V
Voltage V
IH
e
Min
I
I
Input Current
@
Max V
CC
e
Max, V
I
e
5.5V
1mA
Input Voltage
I
IH
High Level Input Current V
CC
e
Max, V
I
e
2.4V DM74 40
mA
Clock Inputs
54 80
I
IL
Low Level Input Current V
CC
e
Max, V
I
e
0.4V DM74
b
1.6
mA
Clock Inputs
54
b
3.2
I
OS
Short Circuit V
CC
e
Max 54
b
20
b
55
mA
Output Current (Note 2)
DM74
b
18
b
55
I
CC
Supply Current With V
CC
e
Max
120 mA
Outputs High
2
