Use Single or Dual Logic Gates in Your Projects
With reference to Post #975 and the Link below:
Selection Tables
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Very often, we need only one or two logic gates to make our circuits work.
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We can avoid the larger versions of these I.C.s by using small SMD single/dual logic gates.
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SOT23-5/6 and SOT-353-5/6 form factors are available and can still be managed with manual soldering, as seen in the previous post.
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Below are gates I often use.
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Many other logic families and gates are available.
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These gates are inexpensive, ex. 50PCS SN74LVC1G66 about $2.00
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Suggest you look at the SN74LVC version of these chips as their Vcc can be 1.65V to 5.5V
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The inputs of the LVC family are 5V tolerant.
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LVC can be used as 5V to 3V3 logic level shifter. i.e. 5V logic --> 3.3V.
As a side note, we can use theSN74AHC1G125SN74AHCT1G125 for 3V3 to 5V.
Linear
- LMV321 Single supply OP Amp
and - TL331 Comparator
Circuit Example
- We need a Schmitt trigger connected to a switch:
