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75T2091 - DTMF Transceivers

Download the 75T2091 datasheet PDF. This datasheet also covers the 75T2089 variant, as both devices belong to the same dtmf transceivers family and are provided as variant models within a single manufacturer datasheet.

Description

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.

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.

📥 Download Datasheet

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

Datasheet Details

Part number 75T2091
Manufacturer TDK
File Size 75.59 KB
Description DTMF Transceivers
Datasheet download datasheet 75T2091 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
75T202 Single-Turn Trimmers Vishay Intertechnology
75T980CP SSI75T980CP Silicon Systems

Other Datasheets by TDK

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

Full PDF Text Transcription

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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. The DTMF generator provides performance similar to the Mostek MK5380, but with an improved (tighter) output amplitude range specification and with the addition of independent latch and reset controls. An additional feature of the 75T2090/2091 is "imprecise" call progress detector. The detector detects the presence of signals in the 305-640 Hz band.
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