www.fairchildsemi.com 2
DM7474
Absolute Maximum Ratings(Note 2)
Note 2: 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 3: The symbol (↑) indicates the rising edge of the clock pulse is used for reference.
Note 4: T
A
= 25°C and V
CC
= 5V.
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: Not more than one output should be shorted at a time.
Note 7: With all outputs open, I
CC
is measured with the Q and Q outputs HIGH in turn. At the time of measurement the clock is grounded.
Note 8: Clear is tested with preset HIGH and preset is tested with clear HIGH.
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 −0.4 mA
I
OL
LOW Level Output Current 16 mA
f
CLK
Clock Frequency (Note 4) 0 15 MHz
t
W
Pulse Width Clock HIGH 30
(Note 4) Clock LOW 37
ns
Clear LOW 30
Preset LOW 30
t
SU
Input Setup Time (Note 3)(Note 4) 20↑ ns
t
H
Input Hold Time (Note 3)(Note 4) 5↑ 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
I
I
Input Current @ Max Input Voltage V
CC
= Max, V
I
= 5.5V 1 mA
I
IH
HIGH Level V
CC
= Max D 40
Input Current V
I
= 2.4V Clock 80
µA
Clear 120
Preset 40
I
IL
LOW Level V
CC
= Max D −1.6
Input Current V
I
= 0.4V Clock −3.2
mA
(Note 8) Clear −3.2
Preset −1.6
I
OS
Short Circuit Output Current V
CC
= Max (Note 6) −18 −55 mA
I
CC
Supply Current V
CC
= Max (Note 7) 17 30 mA
