Page 32 - EE2449_TTL_Datasheet

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
LOW POWER SCHOTTKY
• Multifunction Capability
• On-Chip Select Logic Decoding
• Fully Buffered Complementary Outputs
• Input Clamp Diodes Limit High Speed Termination Effects

J SUFFIX
CERAMIC
CASE 620-09
CONNECTION DIAGRAM DIP (TOP VIEW) 16
1
V CC I 4 I 5 I 6 I 7 S 0 S 1 S 2
16 15 14 13 12 11 10 9

N SUFFIX
PLASTIC
CASE 648-08
16
1
1 2 3 4 5 6 7 8
I 3 I 2 I 1 I 0 Z Z E GND
D SUFFIX
SOIC
16
1 CASE 751B-03

ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
PIN NAMES LOADING (Note a)
SN74LSXXXD SOIC
HIGH LOW
S 0 –S 2 Select Inputs 0.5 U.L. 0.25 U.L.
E Enable (Active LOW) Input 0.5 U.L. 0.25 U.L. LOGIC SYMBOL
I 0 –I 7 Multiplexer Inputs 0.5 U.L. 0.25 U.L.
Z Multiplexer Output (Note b) 10 U.L. 5 (2.5) U.L.
Z Complementary Multiplexer Output 10 U.L. 5 (2.5) U.L.
74 3 2 1 15 14 13 12
(Note b)
NOTES: EI 0 I 1 I 2 I 3 I 4 I 5 I 6 I 7
a) 1 TTL Unit Load (U.L.) = 40 mA HIGH/1.6 mA LOW. 11 S 0
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) 10 S 1
Temperature Ranges. 9 S 2
Z Z
6 5

V CC = PIN 16
GND = PIN 8

FAST AND LS TTL DATA
5-144
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