Bug in "ON Semi" Library

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Jack_M
Posts: 21
Joined: 01 Apr 2016, 03:38

Bug in "ON Semi" Library

#1 Post by Jack_M » 05 Sep 2018, 03:52

Hi, this just bit me.
I've found out that many if not all multi-part components in the ON Semi Library have the power supply part upside down.

The pins are correct but they are laid out upside down, so this can happen
wrong_symbol.PNG
and you find out too late that it's wrong.

We reviewed the schematic before proceeding with a prototype run, but we still missed it because this violates a de-facto standard we are so used we glance over.
P.S.: No, i didn't flip the part, obviously. This is how you place it. Dip 3.1.0.1
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dipicorg
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Joined: 11 Sep 2015, 06:22
Location: Schleitheim, Switzerland
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Re: Bug in "ON Semi" Library

#2 Post by dipicorg » 05 Sep 2018, 04:16

None of these Components are "On Semi Parts"... did they made manually by you?
Please take a look for it in the Components Editor...
The Schematics look like one Part was flipped horizontally... (74HCT125)

Jack_M
Posts: 21
Joined: 01 Apr 2016, 03:38

Re: Bug in "ON Semi" Library

#3 Post by Jack_M » 24 Sep 2018, 05:10

Hi. I know that it looks like it, but as i said i didn't flip the part.

I placed the component MC74HC125AD, i later changed the name to reflect what i was going to mount
Please do try, i just updated to 3.2 to see if it was a problem in the older component library but it's still there, many of the components have this "issue"

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dipicorg
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Re: Bug in "ON Semi" Library

#4 Post by dipicorg » 24 Sep 2018, 12:33

This is not a Bug. The Design is just made like this. You can flip the Powerconnections if required. The Pin Description and Uses are correct. GND is Minus (7) and VDD is Plus (14) on the specified Chip.

Jack_M
Posts: 21
Joined: 01 Apr 2016, 03:38

Re: Bug in "ON Semi" Library

#5 Post by Jack_M » 27 Sep 2018, 09:19

Let me re-explain myself.

Yes, technically the part is designed correctly.

However, for no apparent reason other than who drew the library did it this way, it is not conformig to a de-facto standard.
It's not a bug per-se but it is a thing that can bite users and slip past reviews because who would expect that the power supply part is by default upside down?

so let's say """BUG""" okay?

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