I'm trying to interface the logic signals from a RF receiver, RXD-418-KH2 (data sheet below) that runs at 3v to a variable frequency drive, model ATV11 (data sheet below) digital inputs that expect 15v nom. It's inputs have a 5kohm resistance (I assume to ground) and it provides the 15v. see page 28 of data sheet. The VFD needs >11v for logic high, and <5 for low.
I don't know the best way to do this, I try to search for suggestions, but I'm wasting time spinning my wheels. I would like a monolithic solution that would take the +15v rail, a 3v logic input and produce a non-inverted output.
INPUT | OUTPUT
0v | OPEN or 0v
3V | 15v
A hint in the right direction would be great.
Also, since the VFD is driving equipment it is important that if the driver fails it fails open so the machine doesn't continue running on it's own.
RXD-418-KH2 data sheet:
ATV11 data sheet / user manual: