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DM74AS646 Folha de dados(PDF) 4 Page - Fairchild Semiconductor

Nome de Peças DM74AS646
Descrição Electrónicos  Octal Bus Transceiver and Register
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74AS646 Folha de dados(HTML) 4 Page - Fairchild Semiconductor

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4
Absolute Maximum Ratings(Note 3)
Note 3: 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 4: 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 5: For I/O ports, the parameters IIH and IIL include the OFF-State current, IOZH and IOZL.
Supply Voltage
7V
Input Voltage
Control Inputs
7V
I/O Ports
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
41.1
°C/W
M Package
81.5
°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
90
MHz
tW
Width of Clock Pulse
HIGH
5
ns
LOW
6
ns
tSU
Data Setup Time (Note 4)
6
ns
tH
Data Hold Time (Note 4)
0
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 = Max
IOH = Max
2
Output Voltage
VIH = Min
IOH = −3 mA
2.4
3.2
V
VCC = 4.5V to 5.5V, IOH = −2 mA
VCC − 2
VOL
LOW Level
VCC = 4.5V, VIL = Min
0.35
0.5
V
Output Voltage
VIH = 2V, IOL = Max
II
Input Current @ Max
VCC = 5.5V
VI = 7V
Control Inputs
0.1
mA
Input Voltage
VI = 5.5V
A or B Ports
0.1
IIH
HIGH Level Input Current
VCC = 5.5V, VIH = 2.7V
Control Inputs
20
µA
(Note 5)
A or B Ports
70
IIL
LOW Level Input Current
VCC = 5.5V, VIL = 0.4V
Control Inputs
−0.5
mA
(Note 5)
A or B Ports
−0.75
IO
Output Drive Current
VCC = 5.5V, VO = 2.25V
−30
−112
mA
ICC
Supply Current
VCC = 5.5V
Outputs HIGH
120
195
DM74AS646
Outputs LOW
130
211
Outputs Disabled
130
211
mA
Outputs HIGH
110
185
DM74AS648
Outputs LOW
120
195
Outputs Disabled
120
195


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