TELEPHONE_HANDSET_TONE_DIAL_ENCODER

Published:2009/6/25 22:35:00 Author:May | From:SeekIC

This encoder uses a single contact per key keyboard and provides all other switching func-tion electronically. The diode between termi-nals 8 and 15 prevents the output going more than 1 volt negative tive supply V-. The supply voltage range with respect to the nega-circuit operates over the from 3.5 volts to 15 volts.



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