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DM74AS258(2000) View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
DM74AS258
(Rev.:2000)
Fairchild
Fairchild Semiconductor Fairchild
DM74AS258 Datasheet PDF : 6 Pages
1 2 3 4 5 6
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
7V
7V
5.5V
0°C to +70°C
65°C to +150°C
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.
75.0°C/W
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
48
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
Units
VIK
Input Clamp
Voltage
VOH
HIGH Level
Output Voltage
VOL
LOW Level
Output Voltage
VCC = 4.5V, II = −18 mA
VCC = 4.5V, IOH = Max
IOH = −2 mA, VCC = 4.5V to 5.5V
VCC = 4.5V, IOL = Max
1.2
V
2.4
3.2
V
VCC 2
V
0.35
0.5
V
II
Input Current @
VCC = 5.5V, VIH = 7V
A, B, G
Max Input Voltage
Select
0.1
mA
0.2
IIH
HIGH Level
Input Current
VCC = 5.5V, VIH = 2.7V
A, B, G
Select
20
µA
40
IIL
LOW Level
Input Current
VCC = 5.5V, VIL = 0.4V
Select
All Others
1
mA
0.5
IO (Note 2) Output Drive Current
VCC = 5.5V, VO = 2.25V
30
112
mA
IOZH
Off-State Output Current, VCC = 5.5V
50
µA
HIGH Level Voltage Applied VO = 2.7V
IOZL
Off-State Output Current, VCC = 5.5V
LOW Level Voltage Applied VO = 0.4V
50
µA
ICCH
Supply
DM74AS257
Outputs HIGH
12.9
19.7
mA
Current
DM74AS258
8.8
13.5
mA
ICCL
Supply
DM74AS257 VCC = 5.5V
Current
DM74AS258 Outputs Open
Outputs LOW
19
30.6
mA
15.8
24.6
mA
ICCZ
Supply
DM74AS257
Current
DM74AS258
Outputs Disabled
19.7
31.9
mA
15.5
25.2
mA
Note 2: The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
3
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