MT8870DE

Description: The MT8870DE is a complete Dual-Tone Multi-Frequency (DTMF) receiver that integrates both the band-split filter and digital decoder functions. It is designed for use in telephone equipment and other systems that require reliable DTMF signal detection and decoding. The device provides a straightforward interface for detecting and decoding DTMF signals, making it suitable for a wide range of telecommunication applications. Key Features:

• Complete DTMF receiver with band-split filter and decoder
• Decodes all 16 standard DTMF tone pairs into 4-bit binary codes
• Wide dynamic range (handles both small and large signals)
• Internal gain setting amplifier with adjustable gain
• Power-down mode for reduced power consumption
• Standard microprocessor interface for data transfer
• Low power consumption

Technical Specifications:

• Package Type: SOIC-18, PDIP-18
• Operating Voltage Range: 3V to 5.5V
• Typical Power Consumption: 35 mW (operational mode), 0.5 mW (power-down mode)
• Input Signal Range: -35 dBm to +0 dBm
• Minimum Tone Duration: 40 ms
• Dimensions (PDIP-18): 22.5 mm x 6.4 mm x 3.6 mm
• Weight: 1.7 g

Applications:

• Telephone Equipment: Used in telephony systems for detecting and decoding DTMF signals.
• Remote Control: Facilitates remote control of systems via telephone lines.
• Voice Mail Systems: Provides DTMF decoding for voice mail and answering machines.
• Telecommunication Systems: Used in various telecommunication applications requiring DTMF signal processing.
• Security Systems: Enables remote activation and deactivation of security systems.

Datasheet: For detailed technical information, refer to the MT8870DE Datasheet. Category: Communication ICs / DTMF Receivers