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DM7490A
Absolute Maximum Ratings(Note 3)
Note 3: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Note 4: T
A
= 25°C and V
CC
= 5V.
DC Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 5: All typicals are at V
CC
= 5V, T
A
= 25°C.
Note 6: Q
A
outputs are tested at I
OL
= Max plus the limit value of I
IL
for the B input. This permits driving the B input while maintaining full fan-out capability.
Note 7: Not more than one output should be shorted at a time.
Note 8: I
CC
is measured with all outputs open, both RO inputs grounded following momentary connection to 4.5V, and all other inputs grounded.
Supply Voltage 7V
Input Voltage 5.5V
Operating Free Air Temperature Range 0
°C to +70°C
Storage Temperature Range
−65°C to +150°C
Symbol Parameter Min Nom Max Units
V
CC
Supply Voltage 4.75 5 5.25 V
V
IH
HIGH Level Input Voltage 2 V
V
IL
LOW Level Input Voltage 0.8 V
I
OH
HIGH Level Output Current −0.8 mA
I
OL
LOW Level Output Current 16 mA
f
CLK
Clock Frequency A 0 32
MHz
(Note 4) B 0 16
t
W
Pulse Width A 15
(Note 4) B 30 ns
Reset 15
t
REL
Reset Release Time (Note 4) 25 ns
T
A
Free Air Operating Temperature 0 70 °C
Symbol Parameter Conditions Min
Typ
Max Units
(Note 5)
V
I
Input Clamp Voltage V
CC
= Min, I
I
= −12 mA −1.5 V
V
OH
HIGH Level V
CC
= Min, I
OH
= Max
2.4 3.4 V
Output Voltage V
IL
= Max, V
IH
= Min
V
OL
LOW Level V
CC
= Min, I
OL
= Max
0.2 0.4 V
Output Voltage V
IH
= Min, V
IL
= Max (Note 6)
I
I
Input Current @ Max Input Voltage V
CC
= Max, V
I
= 5.5V 1 mA
I
IH
HIGH Level V
CC
= Max A 80
Input Current V
I
= 2.7V Reset 40 µA
B 120
I
IL
LOW Level V
CC
= Max A −3.2
Input Current V
I
= 0.4V Reset −1.6 mA
B −4.8
I
OS
Short Circuit Output Current V
CC
= Max (Note 7) −18 −57 mA
I
CC
Supply Current V
CC
= Max (Note 8) 29 42 mA
