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4hv.org :: Forums :: General Science and Electronics
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Mystery chip in John freau's vttc Staccato

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803
Sun Oct 24 2010, 08:32PM Print
803 Registered Member #2807 Joined: Fri Apr 16 2010, 08:10PM
Location:
Posts: 191
The bottom most ic, it looks like a 74/4, what is it? Is it a 7474 or 74l4 or 74i4? I'm lost.

PAul


Link2
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Myke
Sun Oct 24 2010, 08:50PM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
7414 which is a hex schmitt trigger NOT gate chip.

Link2

I'm not sure why he used the old version of the chip though. Maybe it was what he had on hand?
I think it would be ok to substitute it with the LS version.
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803
Sun Oct 24 2010, 08:54PM
803 Registered Member #2807 Joined: Fri Apr 16 2010, 08:10PM
Location:
Posts: 191
thanks you!

Paul.
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ubuntupokemoninc
Sun Oct 24 2010, 10:05PM
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
looks like he has a severe slant to his writing, witch would mean that's a 7414.
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