Outils pour utilisateurs
DTMF DECODER "HW-005" (MT8870 chip)
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DTMF DECODER "HW-005" (MT8870 chip)
FEATURES
- Power Input: 5V Nominal (4.5V - 5.5V)
- Onboard 3.5mm jack input Facility
- MT8870 Based Frequency Decoder
- 5 Channel Interface
- Detects 0-9, A-D, *, #
- LED notifier for Output state
- 2.54” Pin pitch
- Board Dimension: 37 x 25 x 12 mm (l x w x h)
BLOCK DIAGRAM
PINOUT
| PIN | FUNCTION | COMMENT |
|---|---|---|
| Q1 | Binary Bit 1 | |
| Q2 | Binary Bit 2 | |
| Q3 | Binary Bit 3 | |
| Q4 | Binary Bit 4 | |
| StQ | Delayed String Output | Represents Binary Bit 0 |
| StQ | Power Down Input | |
| IN | Inhibit Input | Logic high inhibits the detection of tones representing characters A, B, C and D |
| VCC | DC Supply Input | 4.5V - 5.5V (5.0V Nominal) |
| GND | Ground |
| PIN | FUNCTION | COMMENT |
|---|---|---|
| Q1 | Binary Bit 1 | |
| Q2 | Binary Bit 2 | |
| Q3 | Binary Bit 3 | |
| Q4 | Binary Bit 4 | |
| StQ | Delayed String Output | Represents Binary Bit 0 |
| StQ | Power Down Input | |
| IN | Inhibit Input | Logic high inhibits the detection of tones representing characters A, B, C and D |
| VCC | DC Supply Input | 4.5V - 5.5V (5.0V Nominal) |
| GND | Ground |
StQ
INTERFACING
documentation/electronique/modules_kits/dtmf_decoder/index.1611492215.txt.gz · Dernière modification : de f1sls
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