The HT9170A is a series of integrated DTMF (Dual-Tone Multi-Frequency) receivers fabricated using CMOS technology manufactured by Holtek. It is designed for telecommunication applications requiring DTMF signal decoding.

Applications

• Telephone systems
• Remote control systems
• Answering machines
• Call progress monitoring
• Interactive voice response (IVR) systems

Features

• Low Power Consumption
• Excellent Input Sensitivity
• High Noise Immunity
• Adjustable Guard Time
• Inhibit Mode
• CMOS Technology

Benefits

• Power Efficiency: Low power consumption extends the battery life in portable devices.
• Reliable Detection: High input sensitivity ensures accurate detection of DTMF signals.
• Robust Performance: High noise immunity prevents false detection in noisy environments.
• Flexible Configuration: Adjustable guard time allows for optimization based on application requirements.
• System Integration: CMOS technology enables easy integration with other digital components.
• Reduced System Cost: Integrated functionality minimizes external components needed.

Additional Details

The HT9170A receiver uses CMOS technology. The device operates from a single power supply. It is designed for low power consumption, extending the battery life of portable applications. The device provides an inhibit mode to disable the DTMF detection. The guard time is programmable to meet application requirements. It boasts high noise immunity to accurately detect valid DTMF signals in noisy environments. The adjustable guard time feature allows the designer to tailor the HT9170A's performance to the specific application. The digital outputs are easily interfaced with other digital logic.