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DM74ALS157SJX 데이터 시트보기 (PDF) - Fairchild Semiconductor

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DM74ALS157SJX Quad 1-of-2 Line Data Selector/Multiplexer Fairchild
Fairchild Semiconductor Fairchild
DM74ALS157SJX Datasheet PDF : 6 Pages
1 2 3 4 5 6
Absolute Maximum Ratings(Note 1)
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
7V
7V
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.
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
0.4
mA
8
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
VIK
Input Clamp Voltage
VCC = 4.5V, II = −18 mA
VOH
HIGH Level Output Voltage
IOH = −0.4 mA, VCC = 4.5V to 5.5V
VCC 2
VOL
LOW Level
VCC = 4.5V
IOL = 4 mA
0.25
Output Voltage
IOL = 8 mA
0.35
II
Input Current @ Maximum
Input Voltage
VCC = 5.5V, VIH = 7V
IIH
HIGH Level Input Current
IIL
LOW Level Input Current
IO
Output Drive Current
ICC
Supply Current
VCC = 5.5V, VIH = 2.7V
VCC = 5.5V, VIL = 0.4V
VCC = 5.5V
VCC = 5.5V
All Inputs = 4.5V
VO = 2.25V
30
DM74ALS157
6
DM74ALS158
5
Max
1.2
0.4
0.5
0.1
20
0.1
112
11
10
Units
V
V
V
V
mA
µA
mA
mA
mA
mA
Switching Characteristics
over recommended operating free air temperature range.
Symbol
Parameter
From (Input)
To (Output)
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
Data to Y
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
Strobe to Y
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
Select to Y
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
Conditions
VCC = 4.5V to 5.5V
CL = 50 pF
RL = 500
DM74ALS157
Min
Max
3
14
2
12
6
20
4
13
7
24
4
14
DM74ALS158
Min
Max
3
15
Units
ns
1
8
ns
5
18
ns
5
18
ns
5
19
ns
5
18
ns
3
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