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HT9170D Holtek DTMF Receiver 3.58 MHz Resonator 2.5 V to 5.5 V SOP 18 SMD
₹82.80 (incl. tax)
Description
HT9170D Holtek DTMF Receiver 3.58 MHz Resonator 2.5 V to 5.5 V SOP 18 SMD
The HT9170D from Holtek Semiconductor is a DTMF (Dual-Tone Multi-Frequency) receiver IC designed to detect and decode the tone signals generated by a telephone keypad. Operating with a 3.58 MHz crystal or ceramic resonator, the IC converts analog DTMF signals into 4-bit binary codes, providing a digital interface for microcontrollers or logic circuits.
Housed in a compact SOP-18 surface-mount package, the HT9170D operates over a wide supply range of 2.5V to 5.5V, making it ideal for telecommunication, security, and remote control applications.
Features
- Full DTMF decoding (16 tone-pair detection)
- Built-in differential input amplifier with high sensitivity
- CMOS digital output (4-bit code) compatible with microcontrollers
- On-chip oscillator requires only a 3.579545 MHz resonator
- Wide operating voltage range: 2.5V to 5.5V
- Low power consumption for battery-operated systems
- High noise immunity and stable frequency operation
- Binary decoded outputs with data valid indicator (DV)
- Standard SOP-18 SMD package for compact PCB layouts
Applications
- Caller ID and telephone tone decoding systems
- Telecommunication control interfaces
- DTMF-based remote control and automation
- Security access and entry systems
- Robotics and signaling systems
- Voice response or call routing equipment
- Home automation and alarm systems
*Product image for illustration purposes only, actual product may vary.
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