7476 Просмотр технического описания (PDF) - Fairchild Semiconductor
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7476 Datasheet PDF : 4 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
Nom
Max
VCC
Supply Voltage
4.75
5
5.25
VIH
HIGH Level Input Voltage
2
VIL
LOW Level Input Voltage
0.8
IOH
HIGH Level Output Current
−0.4
IOL
LOW Level Output Current
16
fCLK
Clock Frequency (Note 3)
0
15
tW
Pulse Width
Clock HIGH
20
(Note 3)
Clock LOW
47
Preset LOW
25
Clear LOW
25
tSU
Input Setup Time (Note 3)(Note 4)
0↑
tH
Input Hold Time (Note 3)(Note 4)
0↓
TA
Free Air Operating Temperature
0
70
Note 3: TA = 25°C and VCC = 5V.
Note 4: The symbol (↑, ↓) indicates the edge of the clock pulse is used for reference (↑) for rising edge, (↓) for falling edge.
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
Input Current
VI = 2.4V
J, K
Clock
Clear
−1.5
2.4
3.4
0.2
0.4
1
40
80
80
Preset
80
IIL
LOW Level
VCC = Max
J, K
−1.6
Input Current
VI = 0.4V
Clock
−3.2
(Note 6)
Clear
−3.2
Preset
−3.2
IOS
Short Circuit Output Current
VCC = Max (Note 7)
ICC
Supply Current
VCC = Max (Note 8)
Note 5: All typicals are at VCC = 5V, TA = 25°C.
Note 6: Clear is measured with preset HIGH and preset is measured with clear HIGH.
−18
−55
18
34
Note 7: Not more than one output should be shorted at a time.
Note 8: With all outputs OPEN, ICC is measured with the Q and Q outputs HIGH in turn. At the time of measurement the clock input is grounded.
Units
V
V
V
mA
µA
mA
mA
mA
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