[Logic Gates] Add an AND gates IC

[agagniere]

Hi, here is one of the simplest logic gate, to get started.

The objective is to understand what design is considered acceptable in this repo, with a simple-to-review PR, before moving on to more advanced components.

Quad 2-input AND Gate

Added:

• 3 symbols

  • single (3 pins) AND symbol
  • 2-bits AND symbol
  • 4-bits AND symbol

• 14 pins component representing an IC with 4 AND gates plus GND and Vcc
  It has 3 possible representations:

  • either 4 binary gates
  • or two 2-bit gates
  • or a single 4-bit gate

  All representations include a 2-pins connector for GND and Vcc

DATASHEETS / REFERENCES

The devices will be added in a separate PR in the Toshiba library

• TC74AC08

OPEN QUESTIONS / UNRESOLVED ISSUES

• The Low and High voltage pins are sometimes named Vss and Vdd (e.g. TC4081B ), sometimes GND and Vcc... For now I used GND and Vcc, let me know what is preferred for this generic component
• The generic 2-pins connector used for GND and Vcc is so narrow the pin names do not fit. Should I do something to the symbol or to the pin names ? maybe calling them L and H will do ? Found the right connector !
• I did not populate the keywords apart from "binary" and "4bit", as I am unsure what is expected there
• Similarly I did not add a single attribute to the component, should I ?

CHECKLIST

• I have read and followed the library conventions¹.
• For packages, I followed IPC7351C (see details in library conventions)
• For modified elements, I bumped their version number
• I already used the new library elements in a design and verified their correctness (optional).
• I'm the copyright owner of the added content (i.e. the changes are made by myself, not copied/imported from somewhere else).
• I agree to publish all my changes under the CC0 Public Domain License², allowing everyone to use and modify the content without any restrictions.

Footnotes

1. Library Conventions: https://docs.librepcb.org/#libraryconventions ↩

2. CC0 Public Domain License: https://en.wikipedia.org/wiki/CC0 ↩

[agagniere]

Edits:

• Found the dedicated 2-pins power pins symbol in the IC library, to use instead of the generic 1x2 connector
• Call the component "And Quad" and not "Quad And", to align with the "OpAmp Quad"
• The suffix of the power pins symbol is now "P" instead of "V", to align with the OpAmp

Preview:

[agagniere]

Edits:

• Improved the 1-bit symbol, making it more compact
• Hide pin names when they bring no information
• Used the same symbol for 4-bits, with a bus notation
• Added a 2-bits symbol
• Fixed an incorrect reference

Preview: