Dtmf Receiver , Inc.

The M-8870 is a full DTMF Receiver that integrates both bandsplit Filter and decoder functions into a single 18-pin DIP or SOIC package. Manufactured using CMOS process technology, the M-8870 offers low power consumption (35 mW max) and precise data handling. Its Filter section uses switched capacitor technology for both the high and low group Filters and for dial Tone rejection. Its decoder uses digital counting techniques to detect and decode all 16 DTMF Tone pairs into a 4-bit code. External component count is minimized by provision of an on-chip differential input Amplifier Clock Generator and latched tri-state inter- face bus. Minimal external components required include a low-cost 3.579545 MHz color burst crystal, a Timing resistor, and a Timing capacitor. The M-8870-02 provides a power-down option which, when enabled, drops consumption to less than 0.5 mW. The M-8870-02 CAN also inhibit the decoding of fourth column digits (see Tone Decoding table on page 5). By Clare, Inc.
M-8870 's PackagesM-8870 's pdf datasheet

M-8870 Pinout, Pinouts
M-8870 pinout,Pin out
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