What is a Data Bus Tristate Transceiver and How Does it Work?

  • Thread starter coastalmess
  • Start date
  • Tags
    Bus Data
In summary, a data bus tristate transceiver is a device that can be used to send data between two devices. It is similar to a stereo amplifier, in that it can be turned on or off by connecting the outputs of the devices.
  • #1
coastalmess
2
0
**I asked an admin where to post this topic, because i wasnt sure if it should go in the homework forum or not, and was told to post here.

Hello. I am taking a beginning circuits class this summer and every homework assignment is accompanied by a simple thought provoking essay (about a page). Yesterday, this was our topic:

"Data bus tristate transceiver. What is it? How does it work? Why use one?"

I know what data busses are, and i know what a transceiver is. I assume tristate refers to the outputs on the transceiver, but i don't really understand what it means.

Running a search for permutations of "data bus tristate transceiver" didnt result in anything a lay person could easily understand. Is this a specific type of transceiver, or a generalization of all tristate data busses? I read the Wikipedia but obviously that's no credible source. I guess my issue with the assignment is finding reliable information that isn't overly technical. I was hoping one of the EE's out there could point me in the right direction as to where to start my research. Thank you in advance.
 
Engineering news on Phys.org
  • #2
Hello coastalmess, welcome to Physics Forums.

I'm sure you are aware that digital circuitry uses two voltage levels - high and low - to represent the binary numbers 1 and 0.

You may be also aware that it is unwise to connect the ouput to two electronic devices together - you wouldn't, for instance, (I hope) wire both ouputs of your stereo amplifier together at the speaker if you only had one speaker. This would result in apalling distorion at best and a loud bang at worst if you did.

Now to apply this wisdom to digital circuits what to do when you want to switch something on from more than one input? You can expect a (not so loud) bang if you simply connect the outputs of two different sending devices together at the input of your switch.

Enter the tri state sender. This can be in one of three states High (1) low (0) or off (high resistance). In the third state it is unaffected by activity from another sender and the system works.

Hope this helps
 
  • #3
Ah. My professor very briefly discussed that via a picture he drew on the board. Your analogy was pretty helpful though, now it makes much more sense. Thank you
 

Related to What is a Data Bus Tristate Transceiver and How Does it Work?

What is a data bus tristate transceiver?

A data bus tristate transceiver, also known as a tristate buffer, is an electronic component that allows for bidirectional data transfer between two devices on a data bus. It has three possible states: high, low, and high-impedance, which acts as an open circuit and allows other devices to communicate on the bus.

How does a data bus tristate transceiver work?

A data bus tristate transceiver contains two sets of input/output pins, one for each direction of data transfer. Depending on the state of the control pin, the transceiver will either allow data to pass through from one set of pins to the other, or it will disconnect the two sets of pins by setting them to high-impedance.

What are the advantages of using a data bus tristate transceiver?

Data bus tristate transceivers allow for multiple devices to share a single data bus, reducing the number of connections needed and simplifying the overall system design. They also help prevent data conflicts and allow for efficient communication between devices.

What are common applications of data bus tristate transceivers?

Data bus tristate transceivers are commonly used in computer systems, such as in central processing units (CPUs) to manage communication between the CPU and other components. They are also used in data storage systems, communication networks, and other electronic devices.

What are the differences between data bus tristate transceivers and other types of transceivers?

Data bus tristate transceivers are specifically designed for use on a data bus, which is a shared communication pathway between multiple devices. Other types of transceivers, such as UART or SPI transceivers, are used for point-to-point communication between two devices. Additionally, data bus tristate transceivers have the added feature of the high-impedance state, which allows for multiple devices to share the same bus without causing conflicts or data loss.

Similar threads

What is the purpose of the OSI model and how does it partition the flow of data?
    • Electrical Engineering
Replies
1
Views
1K
Other Last year of my Ph.D, and having a crisis about my work (data science)
    • STEM Career Guidance
Replies
4
Views
2K
I What is Weighted Histogram Analysis and How Does it Work?
    • Set Theory, Logic, Probability, Statistics
Replies
3
Views
8K
How does the sign convention work in ray optics?
    • Introductory Physics Homework Help
Replies
6
Views
3K
B What fraction of the matter in the universe is in black holes?
    • Cosmology
Replies
15
Views
2K
Please Revise My Statement of Purpose
    • STEM Academic Advising
Replies
5
Views
9K
What to study in prep for writing a physics engine?
    • Programming and Computer Science
Replies
10
Views
3K

Hot Threads

Recent Insights

Back
Top