DM74S299 Просмотр технического описания (PDF) - Fairchild Semiconductor
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DM74S299 Datasheet PDF : 5 Pages
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Absolute Maximum Ratings(Note 2)
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
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
VCC
Supply Voltage
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
IOH
HIGH Level Output Current (QA thru QH)
HIGH Level Output Current (QA′, QH′)
IOL
LOW Level Output Current (QA thru QH)
HIGH Level Output Current (QA′, QH′)
fCLK
Clock Frequency (Note 3)
fCLK
Clock Frequency (Note 4)
tW
Pulse Width (Note 5)
Clock HIGH
Clock LOW
Clear LOW
tSU
Setup Time (Note 6)(Note 5)(Note 7) Select
Data HIGH
Data LOW
tH
Hold Time (Note 5)(Note 7)
tREL
Clear Release Time (Note 5)
TA
Free Air Operating Temperature
Note 3: CL = 15 pF, RL = 280Ω, TA = 25°C and VCC = 5V.
Note 4: CL = 50 pF, RL = 280Ω, TA = 25°C and VCC = 5V.
Note 5: TA = 25°C and VCC = 5V.
Note 6: The symbol (↑) indicates the rising edge of the clock pulse is used for reference.
Note 7: Data includes the two serial inputs and the eight input/output data lines.
Min
4.75
2
0
0
10
10
10
15↑
7↑
5↑
5↑
10↑
0
Nom
5
70
60
Max
5.25
0.8
−6.5
−0.5
20
6
50
40
70
Units
V
V
V
mA
mA
MHz
MHz
ns
ns
ns
ns
°C
3
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