5-225
FAST AND LS TTL DATA
3-LINE TO 8-LINE
DECODERS/DEMULTIPLEXERS
WITH ADDRESS LATCHES
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
VCC Supply Voltage 54
74 4.5
4.75 5.0
5.0 5.5
5.25 V
TAOperating Ambient Temperature Range 54
74 –55
025
25 125
70 °C
IOH Output Current — High 54, 74 –0.4 mA
IOL Output Current — Low 54
74 4.0
8.0 mA
SN54/74LS137
3-LINE TO 8-LINE
DECODERS/DEMULTIPLEXERS
WITH ADDRESS LATCHES
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16 1
16
1
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
16 1
D SUFFIX
SOIC
CASE 751B-03
5-226
FAST AND LS TTL DATA
SN54/74LS137
FUNCTION TABLE
INPUTS
OUTPUTS
ENABLE SELECT
OUTPUTS
GL G1 G2 C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
X
XX
LH
XX
XX
XX
XH
HH
HH
HH
HH
HH
HH
HH
H
L
L
L
L
H
H
H
H
L
L
L
L
L
L
L
L
L
L
H
H
L
H
L
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
H
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H H L X X X Output corresponding to stored
address, L; all others, H
H = high level, L = low level, X = irrelevant
SELECT
INPUTS
A
B
C
GL
G2
G1
(1)
(2)
(3)
(4)
(5)
(6)
(15)
(14)
(13)
(12)
(11)
(10)
(9)
(7)
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
ENABLE
INPUTS
DATA
OUTPUTS
5-227
FAST AND LS TTL DATA
SN54/74LS137
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Symbol
Parameter
Min Typ Max
Unit
Test Conditions
VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
54 0.7
V
Guaranteed Input LOW Voltage for
All Inputs
VIL
Input LOW Voltage
74 0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA
VOH
Output HIGH Voltage
54
2.5
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VOH
Output HIGH Voltage
54
2.5
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VOH
Output HIGH Voltage
74 2.7 3.5 V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VOL
Output LOW Voltage
54, 74 0.25 0.4 V IOL = 4.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
VOL
Output LOW Voltage
74 0.35 0.5 V IOL = 8.0 mA
VIN = VIL or VIH
per Truth Table
IIH
Input HIGH Current
20 µA VCC = MAX, VIN = 2.7 V
IIH
Input HIGH Current
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 mA VCC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C)
Symbol
Parameter
Levels of
Delay
Limits
Unit
Test Conditions
Symbol
Parameter
Levels of
Delay
Min Typ Max
Unit
Test Conditions
tPLH
tPHL Propagation Delay Time, A, B, C to Y 2
411
25 17
38 ns
VCC = 5.0 V
CL = 15 pF
tPLH
tPHL Propagation Delay Time, A, B, C to Y 3
316
19 24
29 ns
VCC = 5.0 V
CL = 15 pF
tPLH
tPHL Propagation Delay Time, Enable G2 to Y 2
213
16 21
27 ns
VCC = 5.0 V
CL = 15 pF
tPLH
tPHL Propagation Delay Time, Enable G1 to Y 3
314
18 21
27 ns
tPLH
tPHL Propagation Delay Time, Enable GL to Y 3
418
25 27
38 ns
AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V)
Symbol
Parameter
Limits
Unit
Test Conditions
Symbol
Parameter
Min Typ Max
Unit
Test Conditions
tWPulse Width — Enable at GL 15 ns
VCC = 5.0 V
tsSetup Time, A, B, C 10 ns
VCC = 5.0 V
thHold Time, A, B, C 10 ns
CC = 5.0 V
5-228
FAST AND LS TTL DATA
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5-229
FAST AND LS TTL DATA
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
and specifically disclaims any and all liability , including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different
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