OK, so here's the deal....
BJT example:
If I use an NPN, a high (say 3.3V) at the transistor's Base makes my output (Collector with pullup) go low (near 0V).
I want the opposite effect. Meaning I want my output (with the pullup) to go low (0V or near 0V) when a low (0V) is applied at the Base/Gate. Was going to use a PNP instead, but everything I've read recommends the Emitter be tied to the supply (Vcc) which defeats the purpose of what I'm trying to accomplish.
How do I achieve the above with only one transistor?
BJT example:
If I use an NPN, a high (say 3.3V) at the transistor's Base makes my output (Collector with pullup) go low (near 0V).
I want the opposite effect. Meaning I want my output (with the pullup) to go low (0V or near 0V) when a low (0V) is applied at the Base/Gate. Was going to use a PNP instead, but everything I've read recommends the Emitter be tied to the supply (Vcc) which defeats the purpose of what I'm trying to accomplish.
How do I achieve the above with only one transistor?