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 Clareâs M-8870
Applications
⢠Telephone switch equipment
⢠Mobile radio
⢠Remote control
⢠Paging systems
⢠PCMCIA
⢠Portable TAD
⢠Remote data entry
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