Identifying Gate Logic Symbol on Spec Sheet: Digital Fundamentals Paper

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Discussion Overview

The discussion revolves around identifying a logic symbol from a specification sheet related to digital fundamentals, specifically focusing on a diamond symbol surrounded by triangles and its application. Participants also inquire about the placement of certain pins on the spec sheet.

Discussion Character

  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant seeks help in identifying a logic symbol described as a diamond surrounded by four triangles, located near specific pins on the spec sheet.
  • Another participant speculates that the symbols may represent latches, explaining their function in terms of data flow and latching previous outputs.
  • A different participant identifies the symbols as transmission gates and provides a link to further information, while also clarifying the roles of VDD and VSS as power and ground pins for the integrated circuit.

Areas of Agreement / Disagreement

There is no consensus on the identification of the logic symbol, as different interpretations are presented. Some participants propose it may be latches, while another identifies them as transmission gates. The discussion remains unresolved regarding the exact nature of the logic symbol.

Contextual Notes

Participants do not clarify the definitions of the symbols or the specific context of their application, leading to potential ambiguity in their interpretations.

Apple&Orange
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Hi there

I'm currently doing a digital fundamentals paper and I was wondering if anyone could identify a logic symbol on the spec sheet attached, and what's it used for. It's on page 4, and the logic symbol is a diamond that is surrounded by 4 traingles. there's eight of them and it's near pins 5, 3, 2, 4, and 1.
Also, where would pins 16 and 8 go on the spec sheet?

Cheers
 

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Guessing here but from the descriptions those are the latches. The load line either allows the current data to flow through (not active) or latches in the previous output (latched case).

Well VDD is your supply voltage and VSS is ground most likely. If you are asking where they would go on the logic diagram they would be all over the places as what you are seeing as logic blocks are made of transistors which require connection to both of those.
 
Apple&Orange said:
Hi there

I'm currently doing a digital fundamentals paper and I was wondering if anyone could identify a logic symbol on the spec sheet attached, and what's it used for. It's on page 4, and the logic symbol is a diamond that is surrounded by 4 traingles. there's eight of them and it's near pins 5, 3, 2, 4, and 1.
Also, where would pins 16 and 8 go on the spec sheet?

Cheers

They are transmission gates:

http://www.maxim-ic.com/app-notes/index.mvp/id/4243

And what do you mean by where do Vdd and Vss go on the "spec sheet"? As Floid says, they are the power and ground pins for the IC.
 
Oh right, sorry, don't know what I was thinking when I was typing haha! Thanks a lot!
 

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