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SN74LS138N(1999) View Datasheet(PDF) - ON Semiconductor

Part Name
Description
Manufacturer
SN74LS138N
(Rev.:1999)
ON-Semiconductor
ON Semiconductor ON-Semiconductor
SN74LS138N Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
SN74LS138
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Min Typ Max Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
Guaranteed Input HIGH Voltage for
V
All Inputs
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
– 0.65 – 1.5
V
VCC = MIN, IIN = – 18 mA
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
0.25 0.4
0.35 0.5
V
IOL = 4.0 mA
V
IOL = 8.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
IIH
Input HIGH Current
20
µA VCC = MAX, VIN = 2.7 V
0.1
mA VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
– 0.4 mA VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
– 20
–100 mA VCC = MAX
ICC
Power Supply Current
10
mA VCC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C)
Symbol
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Parameter
Propagation Delay
Address to Output
Propagation Delay
Address to Output
Propagation Delay E1 or E2
Enable to Output
Propagation Delay E3
Enable to Output
Levels of
Limits
Delay
Min Typ Max Unit
2
2
13
27
20
41
ns
3
3
18
26
27
39
ns
2
2
12
21
18
32
ns
3
3
17
25
26
38
ns
Test Conditions
VCC = 5.0 V
CL = 15 pF
VIN
VOUT
1.3 V
tPHL
1.3 V
AC WAVEFORMS
1.3 V
tPLH
1.3 V
VIN
VOUT
1.3 V
tPHL tPLH
1.3 V
1.3 V
1.3 V
Figure 1.
Figure 2.
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