M8870 Datasheet - Clare

M8870 DTMF Receiver

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. Filter The low and hig.

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 deco.

M8870 Features

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M8870_Clare.pdf