With open collector outputs.
Triggers - Sergey89
Re: Triggers - Sergey89
I'm not seeing the need for these buffers, the MCU input is already high impedance. Perhaps the goal is to have a replaceable component in hopes you'll protect the MCU.
Welcome to the friendlier side of internet crazy
Re: Triggers - Sergey89
That's a lot of circuitry to replace one of these: http://www.semtech.com/images/datasheet/srda3.3-4.pdf