Overview
The LC73861 and LC73862 are DTMF signal detector receiver that incorporates all the necessary filters for telephone answering machines.

FEATUREs
• 16-DTMF tone signal decoder
• DTMF receiver with all necessary filters built-in
   • Dial tone filter
   • High-group bandpass filter
   • Low-group bandpass filter
• Extended dynamic range
• Serial data output
• Microcontroller guard-time compatible
• 4.5 to 5.5 V operating supply voltage range