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DM7474 Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. DM7474
Description  Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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2
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: TA = 25°C and VCC = 5V.
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 5: All typicals are at VCC = 5V, TA = 25°C.
Note 6: Not more than one output should be shorted at a time.
Note 7: With all outputs open, ICC 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
VCC
Supply Voltage
4.75
5
5.25
V
VIH
HIGH Level Input Voltage
2
V
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−0.4
mA
IOL
LOW Level Output Current
16
mA
fCLK
Clock Frequency (Note 4)
0
15
MHz
tW
Pulse Width
Clock HIGH
30
(Note 4)
Clock LOW
37
ns
Clear LOW
30
Preset LOW
30
tSU
Input Setup Time (Note 3)(Note 4)
20
ns
tH
Input Hold Time (Note 3)(Note 4)
5
ns
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 5)
VI
Input Clamp Voltage
VCC = Min, II = −12 mA
−1.5
V
VOH
HIGH Level
VCC = Min, IOH = Max
2.4
3.4
V
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
0.2
0.4
V
Output Voltage
VIH = Min, VIL = Max
II
Input Current @ Max Input Voltage
VCC = Max, VI = 5.5V
1
mA
IIH
HIGH Level
VCC = Max
D
40
Input Current
VI = 2.4V
Clock
80
µA
Clear
120
Preset
40
IIL
LOW Level
VCC = Max
D
−1.6
Input Current
VI = 0.4V
Clock
−3.2
mA
(Note 8)
Clear
−3.2
Preset
−1.6
IOS
Short Circuit Output Current
VCC = Max (Note 6)
−18
−55
mA
ICC
Supply Current
VCC = Max (Note 7)
17
30
mA




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