Semiconductor Components Industries, LLC, 2001
October, 2001 Rev. 7
1
Publication Order Number:
SN74LS151/D
SN74LS151
8-Input Multiplexer
The TTL/MSI SN74LS151 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.
Schottky Process for High Speed
Multifunction Capability
On-Chip Select Logic Decoding
Fully Buffered Complementary Outputs
Input Clamp Diodes Limit High Speed Termination Effects
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
4.75
5.0
5.25
V
TA
Operating Ambient
Temperature Range
0
25
70
C
IOH
Output Current High
0.4
mA
IOL
Output Current Low
8.0
mA
LOW
POWER
SCHOTTKY
SOIC
D SUFFIX
CASE 751B
PLASTIC
N SUFFIX
CASE 648
16
1
16
1
SOEIAJ
M SUFFIX
CASE 966
16
1
Device
Package
Shipping
ORDERING INFORMATION
SN74LS151N
16 Pin DIP
2000 Units/Box
SN74LS151D
SOIC16
38 Units/Rail
SN74LS151DR2
SOIC16
2500/Tape & Reel
SN74LS151M
SOEIAJ16
See Note 1
SN74LS151MEL
SOEIAJ16
1. For ordering information on the EIAJ version of
the SOIC package, please contact your local
ON Semiconductor representative.
See Note 1
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SN74LS151
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2
CONNECTION DIAGRAM DIP (TOP VIEW)
Select Inputs
Enable (Active LOW) Input
Multiplexer Inputs
Multiplexer Output
Complementary Multiplexer Output
S0 - S2
E
I0 - I7
Z
Z
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 U.L.
5 U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 mA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 5 U.L. for Commercial (74) Temperature Ranges.
HIGH
LOW
(Note a)
LOADING
PIN NAMES
VCC = PIN 16
GND = PIN 8
LOGIC SYMBOL
11
10
9
6
5
7 4 3 2 1 15 14 13 12
E I0 I1 I2 I3 I4 I5 I6 I7
S0
S1
S2
Z
Z
14
13
12
11
10
9
1
2
3
4
5
6
7
16
15
8
VCC
I3
I4
I5
I6
I7
S1
S0
S2
I2
I1
I0
Z
Z
E
GND
SN74LS151
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3
LOGIC DIAGRAM
S2
S1
S0
E
I0
I1
I2
I3
I4
I5
I6
I7
Z
Z
14
1
2
6
7
3
4
5
9
11
12
10
13
15
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
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, S1, 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
X
X
X
X
X
X
X
X
X
X
X
H
L
L
L
L
L
L
X
X
X
X
X
X
X
H
L
L
L
L
L
H
X
X
X
X
X
X
X
L
H
L
L
L
H
X
L
X
X
X
X
X
X
H
L
L
L
L
H
X
H
X
X
X
X
X
X
L
H
L
L
H
L
X
X
L
X
X
X
X
X
H
L
L
L
H
L
X
X
H
X
X
X
X
X
L
H
L
L
H
H
X
X
X
L
X
X
X
X
H
L
L
L
H
H
X
X
X
H
X
X
X
X
L
H
L
H
L
L
X
X
X
X
L
X
X
X
H
L
L
H
L
L
X
X
X
X
H
X
X
X
L
H
L
H
L
H
X
X
X
X
X
L
X
X
H
L
L
H
L
H
X
X
X
X
X
H
X
X
L
H
L
H
H
L
X
X
X
X
X
X
L
X
H
L
L
H
H
L
X
X
X
X
X
X
H
X
L
H
L
H
H
H
X
X
X
X
X
X
X
L
H
L
L
H
H
H
X
X
X
X
X
X
X
H
L
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
SN74LS151
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4
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
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
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
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
V
Output LOW Voltage
0.25
0.4
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN VIL or VIH
VOL
Output LOW Voltage
0.35
0.5
V
IOL = 8.0 mA
VIN = VIL or VIH
per Truth Table
I
Input HIGH Current
20
A
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 2)
20
100
mA
VCC = MAX
ICC
Power Supply Current
10
mA
VCC = MAX
2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
(TA = 25
C)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
tPLH
tPHL
Propagation Delay
Select to Output Z
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
VCC = 5.0 V
tPLH
tPHL
Propagation Delay
Enable to Output Z
15
18
24
30
ns
VCC = 5.0 V
CL = 15 pF
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
AC WAVEFORMS
Figure 1.
Figure 2.
VIN
VOUT
1.3 V
tPHL
1.3 V
tPLH
1.3 V
1.3 V
VIN
VOUT
1.3 V
tPHL
1.3 V
tPLH
1.3 V
1.3 V
SN74LS151
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5
PACKAGE DIMENSIONS
N SUFFIX
PLASTIC PACKAGE
CASE 64808
ISSUE R
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
A
B
F
C
S
H
G
D
J
L
M
16 PL
SEATING
1
8
9
16
K
PLANE
T
M
A
M
0.25 (0.010)
T
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.740
0.770
18.80
19.55
B
0.250
0.270
6.35
6.85
C
0.145
0.175
3.69
4.44
D
0.015
0.021
0.39
0.53
F
0.040
0.70
1.02
1.77
G
0.100 BSC
2.54 BSC
H
0.050 BSC
1.27 BSC
J
0.008
0.015
0.21
0.38
K
0.110
0.130
2.80
3.30
L
0.295
0.305
7.50
7.74
M
0
10
0
10
S
0.020
0.040
0.51
1.01
_
_
_
_
SN74LS151
http://onsemi.com
6
PACKAGE DIMENSIONS
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B05
ISSUE J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
1
8
16
9
SEATING
PLANE
F
J
M
R
X 45
_
G
8 PL
P
B
A
M
0.25 (0.010)
B
S
T
D
K
C
16 PL
S
B
M
0.25 (0.010)
A
S
T
DIM
MIN
MAX
MIN
MAX
INCHES
MILLIMETERS
A
9.80
10.00
0.386
0.393
B
3.80
4.00
0.150
0.157
C
1.35
1.75
0.054
0.068
D
0.35
0.49
0.014
0.019
F
0.40
1.25
0.016
0.049
G
1.27 BSC
0.050 BSC
J
0.19
0.25
0.008
0.009
K
0.10
0.25
0.004
0.009
M
0
7
0
7
P
5.80
6.20
0.229
0.244
R
0.25
0.50
0.010
0.019
_
_
_
_
SN74LS151
http://onsemi.com
7
PACKAGE DIMENSIONS
HE
A1
DIM
MIN
MAX
MIN
MAX
INCHES
---
2.05
---
0.081
MILLIMETERS
0.05
0.20
0.002
0.008
0.35
0.50
0.014
0.020
0.18
0.27
0.007
0.011
9.90
10.50
0.390
0.413
5.10
5.45
0.201
0.215
1.27 BSC
0.050 BSC
7.40
8.20
0.291
0.323
0.50
0.85
0.020
0.033
1.10
1.50
0.043
0.059
0
0.70
0.90
0.028
0.035
---
0.78
---
0.031
A1
HE
Q1
LE
_
10
_
0
_
10
_
LE
Q1
_
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
FLASH OR PROTRUSIONS AND ARE MEASURED
AT THE PARTING LINE. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
5. THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL CONDITION.
DAMBAR CANNOT BE LOCATED ON THE LOWER
RADIUS OR THE FOOT. MINIMUM SPACE
BETWEEN PROTRUSIONS AND ADJACENT LEAD
TO BE 0.46 ( 0.018).
M
L
DETAIL P
VIEW P
c
A
b
e
M
0.13 (0.005)
0.10 (0.004)
1
16
9
8
D
Z
E
A
b
c
D
E
e
L
M
Z
M SUFFIX
SOEIAJ PACKAGE
CASE 96601
ISSUE O
SN74LS151
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8
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without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
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PUBLICATION ORDERING INFORMATION
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4321 NishiGotanda, Shinagawaku, Tokyo, Japan 1410031
Phone: 81357402700
Email: r14525@onsemi.com
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For additional information, please contact your local
Sales Representative.
SN74LS151/D
Literature Fulfillment:
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