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DM74AS874 Datasheet(数据表) 3 Page - Fairchild Semiconductor

部件型号  DM74AS874
说明  Dual 4-Bit D-Type Edge-Triggered Flip-Flop
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
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Absolute Maximum Ratings(Note 1)
Note 1: 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 2: The (
↑) arrow indicates the positive edge of the Clock is used for reference.
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C.
Note 3: The output conditions have been chosen to produce a current that closely approximates one-half of the true short-circuit current, IOS.
Supply Voltage
7V
Input Voltage
7V
Voltage Applied to Disabled Output
5.5V
Operating Free Air Temperature Range
0
°C to +70°C
Storage Temperature Range
−65°C to +150°C
Typical
θ
JA
N Package
47.0
°C/W
Symbol
Parameter
Min
Nom
Max
Units
VCC
Supply Voltage
4.5
5
5.5
V
VIH
HIGH Level Input Voltage
2
V
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−15
mA
IOL
LOW Level Output Current
48
mA
fCLK
Clock Frequency
0
80
MHz
tWCLK
Width of Clock Pulse
HIGH
3
ns
LOW
6
tWCLR
Width of Clear Pulse
LOW
2
ns
tSU
Setup Time
Data
4
ns
(Note 2)
Clear Inactive
5
tH
Data Hold Time (Note 2)
1
ns
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIK
Input Clamp Voltage
VCC = 4.5V, II = −18 mA
−1.2
V
VOH
HIGH Level
VCC = 4.5V, VIL = VIL Max, IOH = Max
2.4
3.3
V
Output Voltage
IOH = −2 mA, VCC = 4.5V to 5.5V
VCC − 2
VOL
LOW Level
VCC = 4.5V, VIH = 2V,
0.35
0.5
V
Output Voltage
IOL = Max
II
Input Current at Max Input Voltage VCC = 5.5V, VIH = 7V
0.1
mA
IIH
HIGH Level Input Current
VCC = 5.5V, VIH = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = 5.5V, VIL = 0.4V
−0.5
mA
IO (Note 3) Output Drive Current
VCC = 5.5V, VO = 2.25V
−30
−112
mA
IOZH
OFF-State Output Current,
VCC = 5.5V, VIH = 2V,
50
µA
HIGH Level Voltage Applied
VO = 2.7V,
IOZL
OFF-State Output Current,
VCC = 5.5V, VIH = 2V,
−50
µA
LOW Level Voltage Applied
VO = 0.4V
ICC
Supply Current
VCC = 5.5V
Outputs HIGH
82
133
Outputs OPEN
Outputs LOW
92
149
mA
Outputs Disabled
100
160




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