Subtotal: ₦1,100.00
MT8870DE
₦550.00
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
In stock
The MT8870D/MT8870D-1 is a complete DTMF
receiver integrating both the bandsplit filter and digital
decoder functions. The filter section uses switched
capacitor techniques for high and low group filters;
the decoder uses digital counting techniques to detect
and decode all 16 DTMF tone-pairs into a 4-bit code.
Features
• Complete DTMF Receiver
• Low power consumption
• Internal gain setting amplifier
• Adjustable guard time
• Central office quality
• Power-down mode
• Inhibit mode
• Backward compatible with MT8870C/MT8870C-1
Applications
• Receiver system for British Telecom (BT) or
CEPT Spec (MT8870D-1)
• Paging systems
• Repeater systems/mobile radio
• Credit card systems
• Remote control
• Personal computers
• Telephone answering machine
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