Tone Decoder

[mlt57sooner]

I am wanting to implement the LM567 tone decoder chip but can really find what the output of the chip is? I am wanting to tune the chip to 40 kHz. What will be the output of the chip when it receives a 40 kHz signal??

 

[Sebi]

When the PLL locked, the logic output (pin8) goes down.

 

[hotwaterwizard]

All of the info is in the Datasheet