Page 1
3-LINE TO 8-LINE
DECODERS/DEMULTIPLEXERS
WITH ADDRESS LATCHES
SN54/74LS137
3-LINE TO 8-LINE
DECODERS/DEMULTIPLEXERS
WITH ADDRESS LA TCHES
DATA OUTPUTS
V
Y0 Y1 Y2 Y3 Y5Y4 Y6
CC
16 15
123456
A
SELECT ENABLE
14 13 12 11 10 9
Y0 Y1 Y2 Y3 Y4 Y5
A
BCGLG2 G1 Y7
BCGL
G2 G1 Y7 GND
Y6
7
OUTPUT
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
16
1
8
16
1
16
1
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
T
I
I
CC
A
OH
OL
Supply Voltage 54
74
Operating Ambient Temperature Range 54
74
Output Current — High 54, 74 –0.4 mA
Output Current — Low 54
74
4.5
4.75
–55
0
5.0
5.0
25
25
5.5
5.25
125
70
4.0
8.0
FAST AND LS TTL DAT A
5-1
V
°C
mA
Page 2
SN54/74LS137
OUTPUTS
FUNCTION TABLE
INPUTS
ENABLE SELECT
GL G1 G2 C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
XXXLHXXXXXXXHHHHHHHHHHHHHHH
L
H
L
L
L
L
L
H
H
H
H
H
L
H
L
L
L
L
H
L
L
H
L
H
L
H
L
H
L
H
H H L X X X
H = high level, L = low level, X = irrelevant
L
L
L
L
H
L
H
L
H
L
H
H
H
H
H
L
L
H
H
H
H
H
L
H
H
L
H
H
H
L
H
H
L
H
H
L
H
H
H
H
H
H
H
H
H
H
Output corresponding to stored
address, L; all others, H
H
H
H
L
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
L
H
H
H
H
H
H
H
H
H
H
L
SELECT
INPUTS
ENABLE
INPUTS
GL
G2
G1
(1)
A
(2)
B
(3)
C
(4)
(5)
(6)
(15)
(14)
(13)
(12)
(11)
(10)
(9)
(7)
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
DATA
OUTPUTS
FAST AND LS TTL DATA
5-2
Page 3
SN54/74LS137
VILI
LOW Volt
V
pg
54
2.5
3.5
V
VOHOutput HIGH Voltage
CC
,
OH
,
IN IH
VOLOutput LOW Volt
V
V
V
IIHI
HIGH C
t
Levels of
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol Parameter
V
IH
V
IK
I
IL
I
OS
I
CC
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
Input HIGH Voltage 2.0 V
nput
Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA
nput
Input LOW Current –0.4 mA VCC = MAX, VIN = 0.4 V
Short Circuit Current (Note 1) –20 –100 mA VCC = MAX
Power Supply Current 18 mA VCC = MAX
age
age
urren
54 0.7
74 0.8
74 2.7 3.5 V
54, 74 0.25 0.4 V IOL = 4.0 mA
74 0.35 0.5 V IOL = 8.0 mA
Min Typ Max
0.1 mA VCC = MAX, VIN = 7.0 V
Unit Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
All Inputs
VCC = MIN, IOH = MAX, VIN = V
or VIL per Truth Table
20 µA VCC = MAX, VIN = 2.7 V
IH
VCC = VCC MIN,
=
or
IN
IL
per Truth Table
IH
AC CHARACTERISTICS (V
Symbol Parameter
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
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
= 5.0 V, TA = 25°C)
CC
AC SETUP REQUIREMENTS (T
Symbol Parameter
t
W
t
s
t
h
Pulse Width — Enable at GL 15 ns
Setup Time, A, B, C 10 ns
Hold Time, A, B, C 10 ns
= 25°C, VCC = 5.0 V)
A
Levels of
Delay
2
4
3
3
2
2
3
3
3
4
Limits
Min Typ Max
Limits
Min Typ Max
11
25
16
19
13
16
14
18
18
25
Unit Test Conditions
Unit Test Conditions
17
38
24
29
21
27
21
27
27
38
ns
ns
ns
ns
ns
VCC = 5.0 V
CL = 15 pF
VCC = 5.0 V
FAST AND LS TTL DATA
5-3
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