SN54/74LS151
8-INPUT MULTIPLEXER
The TTL / MSI SN54 / 74LS151 is a high speed 8-input Digital Multiplexer.
It provides, in one package, the ability to select one bit of data from up to eight
sources. The LS151 can be used as a universal function generator to
generate any logic function of four variables. Both assertion and negation
outputs are provided.
•
•
•
•
•
8-INPUT MULTIPLEXER
Schottky Process for High Speed
Multifunction Capability
On-Chip Select Logic Decoding
Fully Buffered Complementary Outputs
Input Clamp Diodes Limit High Speed Termination Effects
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 620-09
16
CONNECTION DIAGRAM DIP (TOP VIEW)
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
16
1
ORDERING INFORMATION
PIN NAMES
S0 – S2
E
I0 – I7
Z
Z
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
LOADING (Note a)
Select Inputs
Enable (Active LOW) Input
Multiplexer Inputs
Multiplexer Output (Note b)
Complementary Multiplexer Output
(Note b)
HIGH
LOW
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 (2.5) U.L.
5 (2.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges.
Ceramic
Plastic
SOIC
LOGIC SYMBOL
FAST AND LS TTL DATA
5-252
SN54/74LS151
LOGIC DIAGRAM
FUNCTIONAL DESCRIPTION
The LS151 is a logical implementation of a single pole,
8-position switch with the switch position controlled by the
state of three Select inputs, S0, S 1, S2. Both assertion and
negation outputs are provided. The Enable input (E) is active
LOW. When it is not activated, the negation output is HIGH
and the assertion output is LOW regardless of all other inputs.
The logic function provided at the output is:
Z = E ⋅ (I0 ⋅ S0 ⋅ S1 ⋅ S2 + ⋅ I1 ⋅ S0 ⋅ S1 ⋅ S2 + I2 ⋅ S0 ⋅ S1 ⋅ S2
+ I3 ⋅ S0 ⋅ S1 ⋅ S2 + I4 ⋅ S0 ⋅ S1 ⋅ S2 + I5 ⋅ S0 ⋅ S1 ⋅ S2 + I6 ⋅ S0
⋅ S1 ⋅ S2 + I7 ⋅ S0 ⋅ S1 ⋅ S2).
The LS151 provides the ability, in one package, to select
from eight sources of data or control information. By proper
manipulation of the inputs, the LS151 can provide any logic
function of four variables and its negation.
TRUTH TABLE
E
S2
S1
S0
I0
I1
I2
I3
I4
I5
I6
I7
Z
Z
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
L
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
FAST AND LS TTL DATA
5-253
SN54/74LS151
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
TA
Operating Ambient Temperature Range
54
74
– 55
0
25
25
125
70
°C
IOH
IOL
Output Current — High
54, 74
– 0.4
mA
Output Current — Low
54
74
4.0
8.0
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VIK
Input Clamp Diode Voltage
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
IIH
Input HIGH Current
IIL
IOS
Input LOW Current
ICC
Power Supply Current
Min
Typ
Unit
Max
2.0
54
0.7
74
0.8
– 0.65
– 1.5
Test Conditions
V
Guaranteed Input HIGH Voltage for
All Inputs
V
Guaranteed Input LOW Voltage for
All Inputs
V
VCC = MIN, IIN = – 18 mA
54
2.5
3.5
V
74
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
54, 74
0.25
0.4
V
IOL = 4.0 mA
74
0.35
0.5
V
IOL = 8.0 mA
20
µA
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 7.0 V
Short Circuit Current (Note 1)
– 20
0.1
mA
– 0.4
mA
– 100
mA
VCC = MAX, VIN = 0.4 V
VCC = MAX
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)
Limits
Typ
Max
Unit
tPLH
tPHL
Symbol
Propagation Delay
Select to Output Z
Parameter
27
18
43
30
ns
tPLH
tPHL
Propagation Delay
Select to Output Z
14
20
23
32
ns
tPLH
tPHL
Propagation Delay
Enable to Output Z
26
20
42
32
ns
tPLH
tPHL
Propagation Delay
Enable to Output Z
15
18
24
30
ns
tPLH
tPHL
Propagation Delay
Data to Output Z
20
16
32
26
ns
tPLH
tPHL
Propagation Delay
Data to Output Z
13
12
21
20
ns
Min
Test Conditions
VCC = 5.0 V
CL = 15 pF
AC WAVEFORMS
Figure 1
Figure 2
FAST AND LS TTL DATA
5-254
Case 751B-03 D Suffix
16-Pin Plastic
SO-16
-A-
"!
! "
"
! " # 1
%# ) ! !" $ !"
8
C
-T-
D M
K
"
!
#! J
F
!
Case 648-08 N Suffix
16-Pin Plastic
R X 45°
G
"
!
)
#!
P
! "
"
9
-B-
!
16
& !
!
°
°
°
°
(
(
(
(
"!
! "
"
!
! ' " "
! ' ! " # & -A-
16
9
1
8
! ! $
!
B
# ) "
! "
# ) !" $ !"
)
F
L
C
S
-T-
K
H
G
M
J
D "
Case 620-09 J Suffix
16-Pin Ceramic Dual In-Line
-A-
!
!
!
!
°
°
°
°
"!
! "
16
"
) "
L
K
M
N
J G
D "
$ " $
! " "
!
!
FAST AND LS TTL DATA
5-255
&
# ) !" $ !"
)
-T
$
" "
C
F
& 8
E
!
! ! " "
-B1
& 9
*
*
!
!
!
!
*
*
!
°
°
!
°
°
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
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
applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does
not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in
systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of
the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such
unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
Literature Distribution Centers:
USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036.
EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England.
JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan.
ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong.
◊
FAST AND LS TTL DATA
5-256
This datasheet has been download from:
www.datasheetcatalog.com
Datasheets for electronics components.