Datasheet Details
| Part number | HT9170D |
|---|---|
| Manufacturer | Holtek Semiconductor Inc |
| File Size | 128.62 KB |
| Description | DTMF Receiver |
| Datasheet |
 HT9170D Datasheet
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General Description
The HT9170B/D are Dual Tone Multi Frequency (DTMF) receivers integrated with digital decoder and bandsplit filter functions as well as power-down mode and inhibit mode operations.
Such devices use digital counting techniques to detect and decode all the 16 DTMF tone pairs into a 4-bit code output.
Key Features
- Operating voltage: 2.5V~5.5V.
- Minimal external components.
- No external filter is required.
- Low standby current (on power down mode).
- Excellent performance.
- Tristate data output for MCU interface.
- 3.58MHz crystal or ceramic resonator.
- 1633Hz can be inhibited by the INH pin.
- HT9170B: 18-pin DIP package HT9170D: 18-pin SOP package General.