ONSEMI 74LS151

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.
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•
•
•
•
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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
GUARANTEED OPERATING RANGES
Symbol
VCC
Parameter
Supply Voltage
Min
Typ
Max
Unit
4.75
5.0
5.25
V
0
25
70
°C
TA
Operating Ambient
Temperature Range
IOH
Output Current – High
– 0.4
mA
IOL
Output Current – Low
8.0
mA
16
1
PLASTIC
N SUFFIX
CASE 648
16
1
SOIC
D SUFFIX
CASE 751B
ORDERING INFORMATION
 Semiconductor Components Industries, LLC, 1999
December, 1999 – Rev. 6
1
Device
Package
Shipping
SN74LS151N
16 Pin DIP
2000 Units/Box
SN74LS151D
16 Pin
2500/Tape & Reel
Publication Order Number:
SN74LS151/D
SN74LS151
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC
I4
I5
I6
I7
S0
S1
S2
16
15
14
13
12
11
10
9
1
I3
2
I2
3
I1
4
I0
5
Z
6
Z
7
E
8
GND
LOADING (Note a)
PIN NAMES
S0 – S2
E
I0 – I7
Z
Z
Select Inputs
Enable (Active LOW) Input
Multiplexer Inputs
Multiplexer Output
Complementary Multiplexer Output
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 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.
LOGIC SYMBOL
7 4 3 2 1 15 14 13 12
11
10
9
E I0 I1 I2 I3 I4 I5 I6 I7
S0
S1
S2
Z
Z
6
5
VCC = PIN 16
GND = PIN 8
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2
SN74LS151
LOGIC DIAGRAM
I0
S2
I1
4
9
I2
3
I3
2
I4
1
I5
15
I6
14
I7
13
12
10
S1
11
S0
7
E
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
6
Z
5
Z
FUNCTIONAL DESCRIPTION
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 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:
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
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3
SN74LS151
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
O
Output LOW Voltage
IIH
Input HIGH Current
IIL
Input LOW Current
IOS
Short Circuit Current (Note 1)
ICC
Power Supply Current
Min
Typ
Unit
Max
2.0
0.8
– 0.65
2.7
– 1.5
3.5
Test Conditions
V
Guaranteed Input HIGH Voltage for
All Inputs
V
Guaranteed Input LOW Voltage for
All Inputs
V
VCC = MIN, IIN = – 18 mA
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
0.25
0.4
V
IOL = 4.0 mA
0.35
0.5
V
IOL = 8.0 mA
20
µA
VCC = MAX, VIN = 2.7 V
– 20
0.1
mA
VCC = MAX, VIN = 7.0 V
– 0.4
mA
VCC = MAX, VIN = 0.4 V
– 100
mA
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
Symbol
Parameter
Min
Typ
Max
Unit
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
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
Test Conditions
VCC = 5.0 V
CL = 15 pF
AC WAVEFORMS
VIN
VOUT
1.3 V
1.3 V
VIN
tPHL
tPLH
1.3 V
1.3 V
1.3 V
tPHL
VOUT
Figure 1.
1.3 V
tPLH
1.3 V
Figure 2.
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4
1.3 V
SN74LS151
PACKAGE DIMENSIONS
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
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–
16
9
1
8
B
F
C
L
S
–T–
SEATING
PLANE
K
H
G
D
M
J
16 PL
0.25 (0.010)
M
T A
M
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5
DIM
A
B
C
D
F
G
H
J
K
L
M
S
INCHES
MIN
MAX
0.740
0.770
0.250
0.270
0.145
0.175
0.015
0.021
0.040
0.70
0.100 BSC
0.050 BSC
0.008
0.015
0.110
0.130
0.295
0.305
0_
10 _
0.020
0.040
MILLIMETERS
MIN
MAX
18.80
19.55
6.35
6.85
3.69
4.44
0.39
0.53
1.02
1.77
2.54 BSC
1.27 BSC
0.21
0.38
2.80
3.30
7.50
7.74
0_
10 _
0.51
1.01
SN74LS151
PACKAGE DIMENSIONS
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
–A–
16
9
1
8
–B–
P
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.
8 PL
0.25 (0.010)
M
B
S
G
R
K
F
X 45 _
C
–T–
SEATING
PLANE
J
M
D
16 PL
0.25 (0.010)
M
T B
S
A
S
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6
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
9.80
10.00
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.19
0.25
0.10
0.25
0_
7_
5.80
6.20
0.25
0.50
INCHES
MIN
MAX
0.386
0.393
0.150
0.157
0.054
0.068
0.014
0.019
0.016
0.049
0.050 BSC
0.008
0.009
0.004
0.009
0_
7_
0.229
0.244
0.010
0.019
SN74LS151
Notes
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7
SN74LS151
ON Semiconductor and
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including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
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SN74LS151/D