HT9170B, DTMF Receiver

HT9170B, DTMF Receiver, DIP-18, Holtek Semiconductor

The HT9170B/D are Dual Tone Multi Frequency (DTMF) receivers integrated with digital decoder and bandsplit filter functions as well as power-down mode and inhibit mode operations. Such devices use digital counting techniques to detect and decode all the 16 DTMF tone pairs into a 4-bit code output

Product's Technical Datasheet (131 KB) 

• Operating Voltage 2.5V to 5.5V
• Minimum external Components
• No external Filter is required
• TriState Data Output for MCU Interface