EXPERIMENT 7. Multiplexer
Equipment and parts required:
1 Dual 4-input Multiplexer (74153)
1 Power Supply
1 Digital Voltmeter
1 Function Generator
1 Digital Oscilloscope
1. Find data sheet and specifications
Find I/O pin numbers and specifications of all ICs from data sheet downloaded from the web
(ECE labs)
Pin numbers: Vcc, ground, input and outputs of all gates.
Absolute maximum voltages: Vcc and voltages at input pins.
Normal operating voltages: VIL, VIH, VOL, VOH
2. Fill out the modified truth table
Find out how a multiplexer operates from the data sheet, and fill out the following modified truth
table
S1 S0 f
0 0
0 1
1 0
1 1
3. Design a combinational logic circuit
A multiplexer can be used for designing a combinational logic circuit. Design a logic circuit
defined by the following truth table using a 4-input multiplexer, and draw a logic diagram.
X Y f
0 0 1
0 1 0
1 0 0
1 1 1
