DM74ALS138 Datasheet, PDF (3/6 Pages) Fairchild Semiconductor – 3 to 8 Line Decoder/Demultiplexer

Absolute Maximum Ratings(Note 2)
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range
−65°C to +150°C
Typical θ_JA
N Package
75.5°C/W
M Package
104.0°C/W
Note 2: 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
V_CC
V_IH
V_IL
I_OH
I_OL
T_A
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
4.5
5
5.5
2
0.8
−0.4
8
0
70
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at V_CC = 5V, T_A = 25°C.
Symbol
Parameter
Conditions
Min
Typ
V_IK
Input Clamp Voltage
V_OH
HIGH Level
Output Voltage
V_OL
LOW Level
Output Voltage
I_I
Input Current @ Max.
Input Voltage
I_IH
HIGH Level Input Current
I_IL
LOW Level Input Current
I_O
Output Drive Current
I_CC
Supply Current
V_CC = 4.5V, I_I = −18 mA
I_OH = −0.4 mA
V_CC = 4.5V to 5.5V
V_CC = 4.5V
I_OL = 8 mA
V_CC = 5.5V, V_IH = 7V
V_CC = 5.5V, V_IH = 2.7V
V_CC = 5.5V, V_IL = 0.4V
V_CC = 5.5V
V_CC = 5.5V
V_O = 2.25V
V_CC − 2
0.35
−30
5
Max
−1.5
0.5
0.1
20
−0.1
−112
10
Switching Characteristics
over recommended operating free air temperature range.
Symbol
Parameter
Conditions
t_PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t_PHL
Propagation Delay Time
HIGH-to-LOW Level Output
t_PLH
Propagation Delay Time
LOW-to-HIGH Level Output
t_PHL
Propagation Delay Time
HIGH-to-LOW Level Output
V_CC = 4.5V to 5.5V
R_L = 500Ω
C_L = 50 pF
From (Input)
To (Output)
A, B, C
to Y
A, B, C
to Y
Enable
to Y
Enable
to Y
Min
Max
6
22
6
18
4
17
5
17
Units
V
V
V
mA
mA
°C
Units
V
V
V
mA
µA
mA
mA
mA
Units
ns
ns
ns
ns
3
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