| Part number | M-991 |
|---|---|
| Datasheet | M-991_ClareInc..pdf |
| File Size | 171.03 KB |
| Manufacturer | Clare Inc. |
| Description | Call Progress Tone Generator |
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The M-991 is a call progress tone generator integrated circuit for use in telephone systems. The circuit uses low-power CMOS techniques to generate tones which are digitally controlled and highly linear. The M-991 is designed to permit operation with almost any system.
| Part Number | Description |
|---|---|
| M-991-01SM | Call Progress Tone Generator |
| M-991-01SMTR | Call Progress Tone Generator |
| M-991-02SM | Call Progress Tone Generator |
| M-991-02SMTR | Call Progress Tone Generator |
| M-993 | Region 1 MF Tone Generator |
| M-959 | Dial Pulse Counter and Hook Status Monitor |
| M-980-02 | 3V/5V General Purpose Call Progress Tone Detector |
| M-980-02P | 3V/5V General Purpose Call Progress Tone Detector |
| M-980-02S | 3V/5V General Purpose Call Progress Tone Detector |
| M-980-02T | 3V/5V General Purpose Call Progress Tone Detector |
