75T2089 Datasheet (TDK) - DTMF Transceivers

75T2089, DTMF Transceivers

TDK Semiconductor’s 75T2089/2090/2091 are complete Dual-Tone Multifrequency (DTMF) Transceivers that can both generate and detect all 16 DTMF tone-pairs.

These ICs integrate the performance-proven 75T202 DTMF receiver with a DTMF generator circuit.

The DTMF receiver electrical characteristics are

75T2089 Features

* April 2000

* DTMF Generator and Receiver on one-chip

* Call progress detection (2090/2091 only)

* Early detect output (2091 only)

* DTMF Receiver exhibits excellent speech immunity

* Analog input range