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74xGxx: Correct Schmitt symbol in 74xxx1G17

John Beard requested to merge johnbeard/kicad-symbols:74xxx1G17 into master

Partial fix for: #3240

DS: https://www.ti.com/lit/gpn/sn74lvc1g17

The Schmitt symbol was upside down - this is a positive-logic part:

1g17.png

Old:

image.png

New:

image.png

Changes:

  • Flip Schmitt symbol
  • Make pin 1 "not connected" and hidden, like the rest of the 74x1G symbols - this doesn't seem to be a special part in that regard.
  • Add "SOT?553*" to the filter list, but retain the other filters and propagate to the AUP and AUC parts
  • Shorten pins 2 and 4 to 0.2"
  • Place fields so the visible ones don't overlap the body: was:

image.png

Changed parts

  • 74LVC1G17 - base part
    • 74AUP1G17
    • 74AUC1G17

KLC violations

  • S3.2: Symbol not centred, same as other buffer-shaped symbols
  • S5.2: Minuses and underscores in footprint filter 'Texas?R-PDSO-G5?DCK*' should be escaped with '?' or '*'. - I didn't change this - if we want to fix it, it should be a global fix in this library.
Edited by John Beard

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