Double tone decoder IC that you know of ?

[Externet]

Double tone decoder IC that you may know of ?

Is there a functional equivalent to XR-2567 in 14 pins that you may know ? Not a telephony DTMF decoder, but two tone decoders in one IC.

 

[KlausST]

Re: Double tone decoder IC that you may know of ?

Hi,

I googled "dtmf decoder datasheet" , or "dtmf receiver datasheet"
A lot of different part numbers came as result.

But now you say "no dtmf": I'm confused. Double tone, but no dual tone?
Why especially 14 pin?

Klaus

 

[FvM]

Re: Double tone decoder IC that you may know of ?

Surely there's an equivalent: Two 567.

 

[Externet]

Re: Double tone decoder IC that you may know of ?

...But now you say "no dtmf": I'm confused. Double tone, but no dual tone?
Why especially 14 pin?
Klaus

Thanks. It is an attempt to reverse engineer a circuit with a missing and unknown 14 pin chip. Extremely confusing and difficult to solve. I was shooting for awkward answers that could spark-trigger my old memory.