Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
b) Draw a circuit showing how to use a 74LS138 decoder and a 74LS10 NAND gate to implement the equation F = E(2,5,7). The 74LS138 is an "active-low" decoder and the 74LS10 is a positive logic NAND – remember how to use bubble-matching with NAND gates. In the decoder, Pin G1 is connected to Vcc and the G2 pins are not used (connected to GND). The image on the TI.com datasheet is not very clear, here is a better picture of the decoder: 16

b) Draw a circuit showing how to use a 74LS138 decoder and a 74LS10 NAND gate to implement the equation F = E(2,5,7). The 74LS138 is an "active-low" decoder and the 74LS10 is a positive logic NAND – remember how to use bubble-matching with NAND gates. In the decoder, Pin G1 is connected to Vcc and the G2 pins are not used (connected to GND). The image on the TI.com datasheet is not very clear, here is a better picture of the decoder: 16

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
See similar textbooks
icon
Related questions
Question
100%

This is a practice problem I am having a little difficulty with understanding.

Thank you for the help. 

### Using 74LS138 Decoder and 74LS10 NAND Gate To implement the equation \( F = \Sigma(2,5,7) \), we'll use a 74LS138 decoder and a 74LS10 NAND gate. The 74LS138 is an "active-low" decoder, and the 74LS10 is a positive logic NAND. Remember to apply bubble-matching with NAND gates for correct logic synthesis. ### Decoder Configuration - **Pin G₁**: Connect to \( V_{CC} \). - **Pins G₂A and G₂B**: Not used, connect to GND. ### 74LS138 Pin Diagram - **Inputs**: - Pin 1: \( A \) - Pin 2: \( B \) - Pin 3: \( C \) - **Outputs**: - Pin 15: \( Y0 \) - Pin 14: \( Y1 \) - Pin 13: \( Y2 \) (used in equation) - Pin 12: \( Y3 \) - Pin 11: \( Y4 \) - Pin 10: \( Y5 \) (used in equation) - Pin 9: \( Y6 \) - Pin 7: \( Y7 \) (used in equation) - **Other Pins**: - Pin 16: \( V_{CC} \) - Pin 8: GND This improved diagram offers a clear view for wiring connections between pins to achieve the desired logic function using the decoder.
Transcribed Image Text:### Using 74LS138 Decoder and 74LS10 NAND Gate To implement the equation \( F = \Sigma(2,5,7) \), we'll use a 74LS138 decoder and a 74LS10 NAND gate. The 74LS138 is an "active-low" decoder, and the 74LS10 is a positive logic NAND. Remember to apply bubble-matching with NAND gates for correct logic synthesis. ### Decoder Configuration - **Pin G₁**: Connect to \( V_{CC} \). - **Pins G₂A and G₂B**: Not used, connect to GND. ### 74LS138 Pin Diagram - **Inputs**: - Pin 1: \( A \) - Pin 2: \( B \) - Pin 3: \( C \) - **Outputs**: - Pin 15: \( Y0 \) - Pin 14: \( Y1 \) - Pin 13: \( Y2 \) (used in equation) - Pin 12: \( Y3 \) - Pin 11: \( Y4 \) - Pin 10: \( Y5 \) (used in equation) - Pin 9: \( Y6 \) - Pin 7: \( Y7 \) (used in equation) - **Other Pins**: - Pin 16: \( V_{CC} \) - Pin 8: GND This improved diagram offers a clear view for wiring connections between pins to achieve the desired logic function using the decoder.
Expert Solution
steps

Step by step

Solved in 5 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Dielectric breakdown
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS