I want to use a NPN (2n4401) and PNP (2n3906) with both base connected to a single microcontroller output in order to switch voltage to two inputs off and on. I'm not sure how to create the circuit I need. Tried a basic switching circuit without getting expected results.
Here are additional details: I am using an attiny85 to control the circuit, 0-3.3v at input to base pins of the transistors. I'm switching two lines of an led display (ltd-2601). I want to switch the two lines every `10ms in order to drive the display. So the inputs to the 2601 would be 0v and 3.3v for 10ms and then 3.3v and 0v for 10ms. That's what I hope to accomplish using the npn and pnp transistors together (shared base pin) driven by the single line of the microcontroller. Basically, when the micro-controller line is low the npn output would be 3.3v and the pnp 0v and vice versa when line is high. The goal here is to use only 1 line of the attiny to switch the display rather than two lines.