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75T2091 - DTMF Transceivers

Download the 75T2091 datasheet PDF. This datasheet also includes the 75T2089 variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (75T2089_ETC.pdf) that lists specifications for multiple related part numbers.

General Description

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 identical to the standard 75T202 device characteristics.

Overview

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

Key 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.

More Datasheets from TDK Corporation

Part Number Description
75T2090 DTMF Transceivers
75T202 5V Low Power DTMF Receiver
75T203 5V Low Power DTMF Receiver
75T204 5V Low-Power Subscriber DTMF Receiver
75T2089 DTMF Transceivers