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. * * * * * http://onsemi.com 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 http://onsemi.com 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 http://onsemi.com 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 A 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 = 25C) 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. http://onsemi.com 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 http://onsemi.com 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 http://onsemi.com 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 http://onsemi.com 7 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. 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