At 03:46 PM 4/27/00 -0300, you wrote:
>Does anybody knows any DTMF transeiver witch serial interface (I2C, SPI,...)
>IF 8DIP better !

Hi!, I'm using HT9200A (holtek) (8-dip, 2 wire ifc) for Tx, very nice one!,
no DC noise that it very typical on DTMF encoders, for decoding, I'm using
MC145436 (14 dip, parallel) I'm looking too for Rx decoding in 8dip 2 wire
(HT9200 like), but couldn't found it yet...

If you need datasheet of both ic's I can send it to you personal email,
let me know.

see you.
   Leandro J. Laporta (LU2AOQ)     mail: lu2aoq@yahoo.com
 wrk: Arg. Assoc. for Space Tech.   ham: TCP/IP high speed group HSG


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