M-993 - Region 1 MF Tone Generator

Clare Inc.

General Description

The M-993 is a monolithic CMOS integrated circuit designed to generate multifrequency (MF) tone pairs for use in trunk signaling.

The tones generated conform to CCITT R1 signal recommendations and to AT&T MF standards.

Key Features

Generates standard CCITT R1 MF tones.
Digital input control.
Linear (analog) output.
Power output capable of driving standard line.
14-pin DIP.
Single 5-Volt supply.
Inexpensive 3.58 MHz time base.

📥 Download Datasheet

M-993 region 1 mf tone generator by Clare Inc. - Datasheet Preview

Datasheet Details

Part number	M-993
Manufacturer	Clare Inc.
File Size	140.23 KB
Description	Region 1 MF Tone Generator
Datasheet	M-993 Datasheet

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M-991-02SM	Call Progress Tone Generator
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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M-993 Region 1 MF Tone Generator Features • Generates standard CCITT R1 MF tones • Digital input control • Linear (analog) output • Power output capable of driving standard line • 14-pin DIP • Single 5-Volt supply • Inexpensive 3.58 MHz time base Applications • Telephone systems • Test equipment Description The M-993 is a monolithic CMOS integrated circuit designed to generate multifrequency (MF) tone pairs for use in trunk signaling. The tones generated conform to CCITT R1 signal recommendations and to AT&T MF standards. The M-993 permits design engineers to implement a highly accurate MF sender with a minimum of space, power, and added components. The accuracy of the tone frequencies is assured through use of an easily obtained 3.58 MHz color burst crystal or an external 3.