HT9170 Holtek DTMF Receiver

Description

1. DTMF Signal Decoding: The HT9170 is designed to decode DTMF signals, which are commonly used in telephony for dialing numbers or sending control signals over the phone line.
2. Dual-Tone Signal Recognition: This IC can recognize dual-tone signals, where each key on a telephone keypad is represented by a pair of specific audio frequencies.
3. Digital Outputs: The HT9170 provides digital outputs that indicate the key or keys that were pressed on the DTMF keypad, making it suitable for microcontroller interfacing and remote control applications.
4. Low Power Consumption: It is often designed to operate with low power consumption, making it energy-efficient for battery-operated devices.
5. Compact Package: The HT9170 is available in a compact IC package for easy integration into circuit boards.