I'm looking for DTMF decoder chips and I am having a lot of trouble finding any.
Some of the part numbers I have searched are TDK's SSI-220, or G8870
Any available DTMF decoder will do the job. Does anyone know a place where I could definetly find some?
Thanks
Mike: try Zarlink (previously Mitel) MT8880 (DTMF transceiver) or MT8870 (DTMF receiver). Finding them in unit quantities may be a problem. Digi-Key does not have it in stock, nor does Electrosonic. Mouser does not carry the line. Avnet has stock of some models of the 8870 and the 8880.
Mario.
Mike wrote:
Futurlec shows Holtek and Zarlink parts in stock.
These days folks seem to do this digitally with 8-bit processors -- they've gotten fast enough.
Even my local (Perth, Australia) parts supplier has them in stock, $A2.20. Forget the prefix, 8870 is the generic part number to search for.
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