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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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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 TA IOH IOL Parameter Supply Voltage Operating Ambient Temperature Range Output Current - High Output Current - Low Min 4.75 0 Typ 5.0 25 Max 5.25 70 - 0.4 8.0 Unit V C mA mA
16 1
PLASTIC N SUFFIX CASE 648
16 1
SOIC D SUFFIX CASE 751B
ORDERING INFORMATION
Device SN74LS151N SN74LS151D Package 16 Pin DIP 16 Pin Shipping 2000 Units/Box 2500/Tape & Reel
(c) Semiconductor Components Industries, LLC, 1999
1
December, 1999 - Rev. 6
Publication Order Number: SN74LS151/D
SN74LS151
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC 16 I4 15 I5 14 I6 13 I7 12 S0 11 S1 10 S2 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 0.5 U.L. 0.5 U.L. 0.5 U.L. 10 U.L. 10 U.L. LOW 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 E I0 I1 I2 I3 I4 I5 I6 I7 S0 S1 S2 Z Z 6 5
11 10 9
VCC = PIN 16 GND = PIN 8
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SN74LS151
LOGIC DIAGRAM
I0 S2 S1
11 9 10 4
I1
3
I2
2
I3
1
I4
15
I5
14
I6
13
I7
12
S0
7
E
VCC = PIN 16 GND = PIN 8 = PIN NUMBERS
6
5
Z
Z
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 H L L L L L L L L L L L L L L L L S2 X L L L L L L L L H H H H H H H H S1 X L L L L H H H H L L L L H H H H S0 X L L H H L L H H L L H H L L H H I0 X L H X X X X X X X X X X X X X X I1 X X X L H X X X X X X X X X X X X I2 X X X X X L H X X X X X X X X X X I3 X X X X X X X L H X X X X X X X X I4 X X X X X X X X X L H X X X X X X I5 X X X X X X X X X X X L H X X X X I6 X X X X X X X X X X X X X L H X X I7 X X X X X X X X X X X X X X X L H Z H H L H L H L H L H L H L H L H L Z 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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SN74LS151
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 2.7 - 0.65 3.5 0.25 VO OL Output LOW Voltage 0.35 IIH IIL IOS ICC Input HIGH Current Input LOW Current Short Circuit Current (Note 1) Power Supply Current - 20 0.5 20 0.1 - 0.4 - 100 10 V A mA mA mA mA 0.4 Min 2.0 0.8 - 1.5 Typ Max Unit V V V V V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN = - 18 mA VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table IOL = 4.0 mA IOL = 8.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table
VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.4 V VCC = MAX VCC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25C)
Limits Symbol tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay Select to Output Z Propagation Delay Select to Output Z Propagation Delay Enable to Output Z Propagation Delay Enable to Output Z Propagation Delay Data to Output Z Propagation Delay Data to Output Z Min Typ 27 18 14 20 26 20 15 18 20 16 13 12 Max 43 30 23 32 42 32 24 30 32 26 21 20 Unit ns ns ns ns ns ns Test Conditions
VCC = 5.0 V CL = 15 pF
AC WAVEFORMS
VIN
1.3 V tPHL
1.3 V tPLH 1.3 V
VIN
1.3 V tPHL tPLH
1.3 V
VOUT
1.3 V
VOUT
1.3 V
1.3 V
Figure 1.
Figure 2.
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SN74LS151
PACKAGE DIMENSIONS
N SUFFIX PLASTIC PACKAGE CASE 648-08 ISSUE R
-A-
16 9 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. 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
B
1 8
F S
C
L
-T- H G D
16 PL
SEATING PLANE
K
J TA
M
M
0.25 (0.010)
M
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SN74LS151
PACKAGE DIMENSIONS
D SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 ISSUE J
-A-
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. 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
16
9
-B-
1 8
P
8 PL
0.25 (0.010)
M
B
S
G F
K C -T-
SEATING PLANE
R
X 45 _
M D
16 PL M
J
0.25 (0.010)
TB
S
A
S
DIM A B C D F G J K M P R
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SN74LS151
Notes
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SN74LS151
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC 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 special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC 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 SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC 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 SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
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SN74LS151/D

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