54LS137 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
54LS137 Datasheet PDF : 5 Pages
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SN54 / 74LS137
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Min Typ Max Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
54
VIL
Input LOW Voltage
74
0.7
Guaranteed Input LOW Voltage for
0.8
V
All Inputs
VIK
VOH
Input Clamp Diode Voltage
54
Output HIGH Voltage
74
– 0.65 – 1.5
2.5
3.5
2.7
3.5
V
VCC = MIN, IIN = – 18 mA
V
VCC = MIN, IOH = MAX, VIN = VIH
V
or VIL per Truth Table
VOL
Output LOW Voltage
54, 74
74
0.25 0.4
0.35 0.5
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
V
IOL = 8.0 mA
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
18
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
mA VCC = MAX
AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C)
Symbol
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Parameter
Propagation Delay Time, A, B, C to Y
Propagation Delay Time, A, B, C to Y
Propagation Delay Time, Enable G2 to Y
Propagation Delay Time, Enable G1 to Y
Propagation Delay Time, Enable GL to Y
Levels of
Limits
Delay
Min Typ Max Unit
2
4
11
25
17
38
ns
3
3
16
19
24
29
ns
2
2
13
16
21
27
ns
3
3
14
18
21
27
ns
3
4
18
25
27
38
ns
Test Conditions
VCC = 5.0 V
CL = 15 pF
AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V)
Limits
Symbol
Parameter
Min Typ Max Unit
tW
Pulse Width — Enable at GL
15
ns
ts
Setup Time, A, B, C
10
ns
th
Hold Time, A, B, C
10
ns
Test Conditions
VCC = 5.0 V
FAST AND LS TTL DATA
5-227
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