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M-8870 - DTMF Receiver

Datasheet Summary

Description

M-8870 operating functions (see Figure 2) include a bandsplit filter that separates the high and low tones of the received pair, and a digital decoder that verifies both the frequency and duration of the received tones before passing the resulting 4-bit code to the output bus.

Features

  • manent dama.

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Datasheet Details

Part number M-8870
Manufacturer Clare
File Size 507.32 KB
Description DTMF Receiver
Datasheet download datasheet M-8870 Datasheet
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M-8870 DTMF Receiver · · · · · · · · Low power consumption Adjustable acquisition and release times Central office quality and performance Power-down and inhibit modes (-02 only) Inexpensive 3.58 MHz time base Single 5 volt power supply Dial tone suppression Applications include: telephone switch equipment, remote data entry, paging systems, personal computers, credit card systems 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.
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