Logic Families Electronics
Upcoming SlideShare
Loading in...5
×
 

Like this? Share it with your network

Share

Logic Families Electronics

on

  • 20,015 views

a short slide on logic families in electronics along with some quick facts about them. you can contact anant @ http://anantshri.info

a short slide on logic families in electronics along with some quick facts about them. you can contact anant @ http://anantshri.info

Statistics

Views

Total Views
20,015
Views on SlideShare
19,967
Embed Views
48

Actions

Likes
5
Downloads
432
Comments
0

5 Embeds 48

http://www.slideshare.net 30
http://aulavirtual.fiee-uni.com 9
http://www.linkedin.com 7
http://translate.googleusercontent.com 1
http://www.slideee.com 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Logic Families Electronics Presentation Transcript

  • 1. INTRODUCTION TO LOGIC FAMILIES
      • What is a logic Family
      • It is the way to describe the internal circuitry of the I.C.
      • Types of logic Families
      • We have 7 Basic Logic Families
      • 1) RTL – Resistor Transistor Logic
      • 2) DTL – Diode Transistor Logic
      • 3) IIL – Integrated injection Logic
      • 4) TTL – Transistor – Transistor Logic (Ex 7400 & 5400 Series)
      • 5) ECL – Emitter Coupled Logic (Ex 10000 series)
      • 6) MOS – Metal Oxide Semiconductor
      • 7) CMOS – Complementary Metal Oxide Semiconductor
      • (Ex. 4000 Series)
    Presentation By Anant Shrivastava (E.I. Fourth Sem)
  • 2.
    • RTL & DTL – Not used in new design
    • But act as a useful starting point
    • RTL was the first Commercial Family
    • DTL is now Completely replaced by TTL
    • TTL – It is a modified form of DTL
    • it is formed by replacing each diode with a transistor
            • Basic Gate is NAND
    • IIL,MOS – Used in Large Scale Integration
    • ECL – Used in High Speed Operations
            • Basic Gate is NOR
    • CMOS – Where power requirement is low
            • Basic Gate is inverter
    Some Information on each Logic Family Presentation By Anant Shrivastava (E.I. Fourth Sem)
  • 3. Characteristics
    • Fan-out – Maximum number of standard load a gate can drive without disparity
    • Power Dissipation – Power Required to operate the gate
    • Expressed in mW.
    • Propagation Delay – Time taken by the signal to propagate from input to output when a signal change occur
    • Noise Margin – Maximum Noise voltage that can be added to circuit without unwanted effect on output
    • (Two Types : - AC & DC Noise)
    • Represented in V and represent max level
    Presentation By Anant Shrivastava (E.I. Fourth Sem)
  • 4. Common Logic Levels Characteristic Table Presentation By Anant Shrivastava (E.I. Fourth Sem) 0 0 - 0.5 V DD V DD V DD = 3 – 10 CMOS -1.8 -1.9 – -1.6 -0.8 -0.95 – -0.7 V EE = -5.2 ECL 0.2 0 - 0.4 3.5 2.4 – 5 V cc = 5 TTL Typical Range Typical Range Low Level Voltage High Level Voltage Voltage Supply Family Type 3 25 0.1 50 CMOS 0.2 2 25 25 ECL 0.4 10 2 20 Low power Schottky TTL 0.4 3 22 10 Schottky TTL 0.4 10 10 10 TTL Noise Margin Propagation delay aPower Dissipation Fan-out Family