I wonder if they make tiny microcontrollers in SOT-23-3 packages, that don't have anything but power, ground, and a single gpio

they'd have to be programmed with 1-wire or something similar

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I was mostly just thinking about things that are not transistors in packages that you would expect to see transistors in. you get voltage regulators in pretty much every "transistory" package I suppose, from TO-3 to SOT-23, but digital circuitry in that style of package would be interesting

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