HT9170D - SOP-18 SMD Holtek DTMF Receiver 3.58 MHz Resonator, 2.5 V to 5.5 V [Original]

Holtek HT9170D SOP-18 DTMF Receiver IC with Digital Decoder

The HT9170D is a highly integrated Dual Tone Multi Frequency (DTMF) receiver from Holtek. It combines a digital decoder and bandsplit filter functions into a single SOP-18 package. This advanced IC efficiently detects and decodes all 16 standard DTMF tone pairs, outputting a 4-bit code for easy system integration. It features highly accurate switched capacitor filters for reliable tone signal division. A built-in dial tone rejection circuit eliminates the need for external pre-filtering components, simplifying your design. Operating across a wide voltage range of 2.5V to 5.5V, it offers versatility for various applications. The HT9170D also includes power-down and inhibit modes for enhanced power efficiency. Its minimal external component requirement reduces design complexity and board space. This makes it an excellent choice for telecommunication, remote control, and data entry systems.

Specifications:

• Product Model: HT9170D
• Manufacturer: Holtek
• Package Type: SOP-18 SMD
• Function: DTMF Receiver IC
• Resonator Frequency: 3.58 MHz
• Operating Voltage: 2.5 V to 5.5 V
• Output Type: 4-bit code
• Integrated Features: Digital Decoder, Bandsplit Filter, Dial Tone Rejection
• Tone Pairs Detected: 16

Key features and benefits:

• Wide Operating Voltage: 2.5V to 5.5V
• Minimal External Components Required
• Integrated Bandsplit Filter and Digital Decoder
• Built-in Dial Tone Rejection Circuit
• Detects and Decodes all 16 DTMF Tone Pairs
• Low Standby Current for Power Efficiency
• Available in SOP-18 SMD Package
• Includes Power-Down and Inhibit Modes

Applications:

• Telecommunication Systems
• Remote Control Systems
• Data Entry Terminals
• Security Systems
• Interactive Voice Response (IVR) Systems
• Home Automation

Package Includes:

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