• Home
  • Archive
  • Tools
  • Contact Us

The Customize Windows

Technology Journal

  • Cloud Computing
  • Computer
  • Digital Photography
  • Windows 7
  • Archive
  • Cloud Computing
  • Virtualization
  • Computer and Internet
  • Digital Photography
  • Android
  • Sysadmin
  • Electronics
  • Big Data
  • Virtualization
  • Downloads
  • Web Development
  • Apple
  • Android
Advertisement
You are here: Home » What is TTL? – Transistor-Transistor Logic

By Abhishek Ghosh June 15, 2018 7:52 am Updated on June 15, 2018

What is TTL? – Transistor-Transistor Logic

Advertisement

In our some previous articles, in context of Arduino for beginners, we discussed about serial connection, UART, SPI, I2C protocol. Another commonly heard phrase is TTL. What is TTL? Transistor-Transistor Logic or TTL is a family of logic circuits used in electronics invented in the 1960s. We will try to keep the article as brief and easy as possible.

 

What is TTL?

 

TTL is a digital logic design where transistors act on DC pulses. Some TTL logic gates are fabricated onto an integrated circuit (IC). TTL ICs commonly bear 4 digit numbers beginning with 74 or 54. Like 7490 counter.

TTL family is made with bipolar transistor technology and tending to disappear because of their high energy consumption (compared to CMOS circuits). TTL technology is standardized to a supply voltage of 5 V. A TTL signal is defined as a low logic level between 0 and 1.4 V, and as a high logic level between 2.4 V and 5 V.

Advertisement

---

TTL is characterized by high switching speed, and some immunity to noise. Main drawback is the fact that circuits using TTL tend to draw more current than equivalent circuits using metal oxide semiconductor (MOS) logic.

Advantages

  • This family of components combines good switching speed with low transfer time.
  • The immunity is good provided that the power supply is decoupled from each circuit by a filtering capacitor.
  • The air intakes, with no fixed state, are in logic state “1” by default (they only discharge a significant current if they are set to zero and they are almost equivalent to resistances towards Vcc = 5 V ) .

Disadvantages

  • The TTL power supply must be accurate: +5 V ± 5%, compared to CMOS circuits which have a much larger supply voltage range (+3 to +18 V ). In case of non-compliance with this requirement, there is a risk, at best, erratic operation of the circuit, and at worst, a partial or complete destruction of the circuit.
  • The bipolar technique is great consumer of electric current; TTL memories are certainly fast, but can hardly be rescued for a long time in case of power failure.
  • The signals transmitted by the TTL circuits can not be transmitted without additional transmission circuits over long distances without loss: maximum length approximately 15 m.

Example

What is TTL Transistor-Transistor Logic

Two-input TTL NAND gate with a simple output stage : TTL inputs are the emitters of bipolar transistors. In the case of NAND inputs, the inputs are the emitters of multiple-emitter transistors, functionally equivalent to multiple transistors where the bases and collectors are tied together. The output is buffered by a common emitter amplifier.

Tagged With transistor transistor logic flash program , ttl signal , what is ttl logic , what is a TTL signal , transistor–transistor logic , how should confirm the ttl component and digital , transistor transistor logic , transistor transistor logic signal , what is TTL signal , transistor-transistor logic and gate

This Article Has Been Shared 334 Times!

Facebook Twitter Pinterest
Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Orthopaedic Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

Here’s what we’ve got for you which might like :

Articles Related to What is TTL? – Transistor-Transistor Logic

  • Oscilloscope : Functions & Basics

    Oscilloscope is an electronic visualization instrument for graphic representation of the electrical signals which can vary over time.

  • Common PNP, NPN Transistors For Arduino, Raspberry Pi Projects

    Here is Kind of List of Common PNP, NPN Transistors For Arduino, Raspberry Pi Projects for the Beginners. Also We Will Discuss Basics Around Transistors.

  • Difference Between Analog and Digital Pins in Arduino UNO

    We Have Discussed the Difference Between Analog and Digital Pins in Arduino UNO in Plain English Suitable For Any Audience.

  • Turn On LED On Dark Without Arduino Program

    We Can Use NPN Transistor, Resistors to Turn On LED On Dark Without Need of Arduino Program. That is Great For Lighting Up Indicator LED on DIY LDR Module.

  • Solid-State Relay (SSR) For Arduino

    Solid-state relays are not really relay rather are electronic components which has some functions like electromechanical relay. Here is an Article on Solid-State Relay (SSR) For Arduino.

Additionally, performing a search on this website can help you. Also, we have YouTube Videos.

Take The Conversation Further ...

We'd love to know your thoughts on this article.
Meet the Author over on Twitter to join the conversation right now!

If you want to Advertise on our Article or want a Sponsored Article, you are invited to Contact us.

Contact Us

Subscribe To Our Free Newsletter

You can subscribe to our Free Once a Day, Regular Newsletter by clicking the subscribe button below.

Click To Subscribe

Please Confirm the Subscription When Approval Email Will Arrive in Your Email Inbox as Second Step.

Search this website…

 

Popular Articles

Our Homepage is best place to find popular articles!

Here Are Some Good to Read Articles :

  • Cloud Computing Service Models
  • What is Cloud Computing?
  • Cloud Computing and Social Networks in Mobile Space
  • ARM Processor Architecture
  • What Camera Mode to Choose
  • Indispensable MySQL queries for custom fields in WordPress
  • Windows 7 Speech Recognition Scripting Related Tutorials

Social Networks

  • Pinterest (20K Followers)
  • Twitter (4.9k Followers)
  • Facebook (5.8k Followers)
  • LinkedIn (3.7k Followers)
  • YouTube (1.2k Followers)
  • GitHub (Repository)
  • GitHub (Gists)
Looking to publish sponsored article on our website?

Contact us

Recent Posts

  • What is Domain-Driven Design (DDD)? January 23, 2021
  • Top 10 Anti Hacking Software for Microsoft Windows January 22, 2021
  • What is Software Modernization? January 21, 2021
  • Cloud Computing : Cybersecurity Tips for Small Business Owners January 20, 2021
  • Arduino : Independently Blink Multiple LED January 18, 2021

 

About This Article

Cite this article as: Abhishek Ghosh, "What is TTL? – Transistor-Transistor Logic," in The Customize Windows, June 15, 2018, January 23, 2021, https://thecustomizewindows.com/2018/06/what-is-ttl-transistor-transistor-logic/.

Source:The Customize Windows, JiMA.in

 

This website uses cookies. If you do not want to allow us to use cookies and/or non-personalized Ads, kindly clear browser cookies after closing this webpage.

Read Cookie Policy.

PC users can consult Corrine Chorney for Security.

Want to know more about us? Read Notability and Mentions & Our Setup.

Copyright © 2021 - The Customize Windows | dESIGNed by The Customize Windows

Copyright  · Privacy Policy  · Advertising Policy  · Terms of Service  · Refund Policy