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DM74ALS244AMSA Arkusz danych(PDF) 2 Page - Fairchild Semiconductor

Numer części DM74ALS244AMSA
Szczegółowy opis  Octal 3-STATE Bus Driver
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Producent  FAIRCHILD [Fairchild Semiconductor]
Strona internetowa  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74ALS244AMSA Arkusz danych(HTML) 2 Page - Fairchild Semiconductor

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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
Electrical Characteristics
over recommended operating free air temperature (unless otherwise specified)
Switching Characteristics
over recommended operating free-air temperature range
Supply Voltage, VCC
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
60.5
°C/W
M Package
79.8
°C/W
Symbol
Parameter
Min
Typ
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
24
mA
TA
Operating Free-Air Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIK
Input Clamp Voltage
VCC = 4.5V, II = −18 mA
−1.5
V
VOH
HIGH Level
VCC = 4.5V to 5.5V
IOH = −0.4 mA
VCC−2V
Output Voltage
VCC = 4.5V
IOH = −3 mA
2.4
V
IOH = Max
2
V
VOL
LOW Level
VCC = 4.5V
0.35
0.5
V
Output Voltage
IOL = 24 mA
II
Input Current at Maximum Input Voltage
VCC = 5.5V, VI = 7V
0.1
mA
IIH
HIGH Level Input Current
VCC = 5.5V, VI = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = 5.5V, VIL = 0.4V
−0.1
mA
IO
Output Drive Current
VCC = 5.5V, VO = 2.25V
−30
−112
mA
IOZH
HIGH Level 3-STATE Output Current
VCC = 5.5V, VO = 2.7V
20
µA
IOZL
LOW Level 3-STATE Output Current
VCC = 5.5V, VO = 0.4V
−20
µA
ICC
Supply Current
VCC = 5.5V
915
mA
Outputs HIGH
Outputs LOW
15
24
mA
Outputs 3-STATE
17
27
mA
Symbol
Parameter
Conditions
From
(Input)
To
(Output)
Min
Max
Units
tPLH
Propagation Delay Time
VCC = 4.5V to 5.5V,
A
Y
3
10
ns
LOW-to-HIGH Level Output
CL = 50 pF,
tPHL
Propagation Delay Time
R1
= 500Ω,
A
Y
3
10
ns
HIGH-to-LOW Level Output
R2
= 500Ω,
tPZH
Output Enable Time to HIGH Level Output
TA = Min to Max
G
Y
3
20
ns
tPZL
Output Enable Time to LOW Level Output
G
Y
3
20
ns
tPHZ
Output Disable Time from HIGH Level Output
G
Y
2
10
ns
tPLZ
Output Disable Time from LOW Level Output
G
Y
1
13
ns


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