Description

The M-88L70 monolithic DTMF receiver offers small size, low power consumption and high performance, with 3 volt operation. Its architecture consists of a bandsplit filter section, which separates the high and low group tones, followed by a digital counting section which verifies the frequency and duration of the received tones before passing the corresponding code to the output bus.

Features

• Operates between 2.7 and 3.6 volts

• Low power consumption

• Power-down mode

• Inhibit mode

• Central office quality and performance

• Inexpensive 3.58 MHz time base

• Adjustable acquisition and release times

• Dial tone suppression

• Functionally compatible with Clare’s M-8870

Applications

• Telephone switch equipment

• Mobile radio

• Remote control

• Paging systems

• PCMCIA

• Portable TAD

• Remote data entry