DM74ALS646 Ver la hoja de datos (PDF) - Fairchild Semiconductor
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DM74ALS646 Datasheet PDF : 6 Pages
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Absolute Maximum Ratings(Note 2)
Supply Voltage
Input Voltage
Control Inputs
I/O Ports
Operating Free-Air Temperature Range
Storage Temperature Range
Typical θJA
N Package
M Package
7V
7V
5.5V
0°C to +70°C
−65°C to +150°C
44.5°C/W
80.5°C/W
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
tW
Pulse Duration, Clocks LOW or HIGH
tSU
Data Setup Time, A before CAB or B before CBA (Note 3) 10↑
tH
Data Hold Time, A after CAB or B after CBA (Note 3)
0↑
TA
Free Air Operating Temperature
Note 3: ↑ = With reference to the LOW-to-HIGH transition of the respective clock.
Nom
5
Max
5.5
0.8
−15
24
40
70
Electrical Characteristics
over recommended free air temperature range
Symbol
Parameter
Test Conditions
Min
VIC
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level
VCC = 4.5V to 5.5V
IOH = −0.4 mA
VCC − 2
Output Voltage
VCC = Min
IOH = −3 mA
2.4
IOH = Max
2
VOL
LOW Level
VCC = Min
IOL = 12 mA
Output Voltage
IOL = 24 mA
IOL = 48 mA
II
Input Current at Maximum VCC = Max
I/O Ports, VI = 5.5V
Input Voltage
Control Inputs, VI = 7V
IIH
HIGH Level Input Current VCC = Max, VI = 2.7V (Note 4)
IIL
LOW Level
VCC = Max,
Control Inputs
Input Current
VI = 0.4V, (Note 4)
I/O Ports
IO
Output Drive Current
VCC = Max, VO = 2.25V
−30
ICC
Supply Current
VCC = Max
Outputs HIGH
Outputs LOW
Outputs Disabled
Note 4: For I/O ports the 3-STATE output currents (IOZH and IOZL) are included in the IIH and IIL parameters.
Typ
3.2
0.25
0.35
0.35
47
55
55
Max
−1.2
0.4
0.5
0.5
100
100
20
−200
−200
−112
76
88
88
Units
V
V
V
mA
mA
MHz
ns
ns
ns
°C
Units
V
V
V
µA
µA
µA
mA
mA
3
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