DM7474 データシートの表示（PDF） - Fairchild Semiconductor
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DM7474
Fairchild Semiconductor
DM7474 Datasheet PDF : 5 Pages
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Absolute Maximum Ratings(Note 2)
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
7V
5.5V
0°C to +70°C
−65°C to +150°C
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
Symbol
Parameter
Min
VCC
Supply Voltage
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
IOH
HIGH Level Output Current
IOL
LOW Level Output Current
fCLK
Clock Frequency (Note 4)
tW
Pulse Width
Clock HIGH
(Note 4)
Clock LOW
4.75
2
0
30
37
Clear LOW
30
Preset LOW
30
tSU
Input Setup Time (Note 3)(Note 4)
20↑
tH
Input Hold Time (Note 3)(Note 4)
5↑
TA
Free Air Operating Temperature
0
Note 3: The symbol (↑) indicates the rising edge of the clock pulse is used for reference.
Note 4: TA = 25°C and VCC = 5V.
Nom
5
Max
5.25
0.8
−0.4
16
15
70
Units
V
V
V
mA
mA
MHz
ns
ns
ns
°C
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Typ
Min
Max
(Note 5)
VI
Input Clamp Voltage
VCC = Min, II = −12 mA
VOH
HIGH Level
VCC = Min, IOH = Max
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
Output Voltage
VIH = Min, VIL = Max
II
Input Current @ Max Input Voltage VCC = Max, VI = 5.5V
IIH
HIGH Level
VCC = Max
D
Input Current
VI = 2.4V
Clock
Clear
−1.5
2.4
3.4
0.2
0.4
1
40
80
120
Preset
40
IIL
LOW Level
Input Current
VCC = Max
VI = 0.4V
(Note 8)
D
Clock
Clear
−1.6
−3.2
−3.2
Preset
−1.6
IOS
Short Circuit Output Current
VCC = Max (Note 6)
ICC
Supply Current
VCC = Max (Note 7)
Note 5: All typicals are at VCC = 5V, TA = 25°C.
Note 6: Not more than one output should be shorted at a time.
−18
−55
17
30
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.
Units
V
V
V
mA
µA
mA
mA
mA
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