DM74AS244SJX View Datasheet(PDF) - Fairchild Semiconductor
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Description
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DM74AS244SJX Datasheet PDF : 5 Pages
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Absolute Maximum Ratings(Note 1)
Supply Voltage, VCC
Input Voltage
Voltage Applied to Disabled Output
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
57.0°C/W
76.0°C/W
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
Symbol
VCC
VIH
VIL
IOH
IOL
TA
Parameter
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Free Air Operating Temperature
Min
Nom
Max
Units
4.5
5
5.5
V
2
V
0.8
V
−15
mA
64
mA
0
70
°C
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C.
Symbol
Parameter
Conditions
Min
Typ
Max
VIK
Input Clamp Voltage
VCC = 4.5V, IIN = −18 mA
VOH
HIGH Level
VCC = 4.5V, IOH = −3 mA
Output Voltage
VCC = 4.5V, IOH = Max
IOH = −2 mA, VCC = 4.5V to 5.5V
VOL
LOW Level Output Voltage
VCC = 4.5V, IOL = Max
II
Input Current at Max Input Voltage VCC = 5.5V
VIN = 7V
Others
IIH
HIGH Level Input Current
VCC = 5.5V, VIN = 2.7V
Others
−1.2
2.4
3.2
2.4
VCC−2
0.35
0.55
100
20
IIL
LOW Level Input Current
VCC = 5.5V, VIN = 0.4V
AS240, (G, G),
(Control Inputs),
−500
DM74AS244 (G)
DM74AS244 (A)
−1000
IOZH
HIGH Level 3-STATE Output Current VCC = 5.5V, V= 2.7V
50
IOZL
LOW Level 3-STATE
Output Current
VCC = 5.5V, V = 0.4V
DM74AS240,
DM74AS244
−50
IO (Note 2)
ICC
Output Drive Current
DM74AS240
Supply Current
VCC = 5.5V, VOUT = 2.25V
VCC = 5.5V
Outputs HIGH
Outputs LOW
−50
−115
−150
11
17
51
75
3-STATE
24
38
ICC
DM74AS244
Supply Current
VCC = 5.5V
Outputs HIGH
Outputs LOW
22
34
60
90
3-STATE
34
54
Note 2: The output conditions have been chosen to produce a current that closely approximates one half the true short-circuit output current, IOS.
Units
V
V
V
µA
µA
µA
µA
µA
mA
mA
mA
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