XD8870 – DTMF Receiver – Xinluda

The Xinluda XD8870 is an enhanced-sensitivity integrated DTMF (dual-tone multi-frequency) receiver in an 18-pin DIP package, part of the industry-standard 8870 DTMF family. It combines bandsplit filtering and digital decoding to convert the 16 DTMF tone pairs into a 4-bit code.

The Xinluda XD8870 is a complete, single-chip DTMF (dual-tone multi-frequency) receiver supplied in an industry-standard 18-pin DIP (DIP-18) package. It integrates a bandsplit filter and a digital decoder on one die, detecting the two simultaneous tones that make up each telephone keypad signal and converting all 16 DTMF tone pairs into a stable 4-bit output code. The device is part of the widely used 8870 DTMF-receiver family (such as the MT8870 / CM8870), making it a convenient choice for legacy and cost-sensitive telecom and remote-control designs.

Key Features

• Integrated DTMF receiver with on-chip bandsplit filter and digital decoder
• Decodes all 16 standard DTMF tone pairs (0-9, A-D, * and #) into a 4-bit code
• Single 5 V supply, operating range 4.75 V to 5.25 V (per manufacturer)
• 18-pin DIP (DIP-18) through-hole package
• “Enhanced sensitivity” integrated receiver design per the manufacturer
• Member of the standard 8870 DTMF-receiver family
• RoHS compliant

Applications

• Telephone and telecom line tone detection
• Interactive voice response (IVR) and paging systems
• Remote control over phone lines and DTMF-based command links
• Home and industrial automation controllers
• Security and access-control systems
• Robotics and embedded control projects

Why Source XD8870 from Pacific Component Xchange

The XD8870 is a specialty Xinluda device with little to no authorized-distributor stock, which makes it difficult to find through mainstream channels. Pacific Component Xchange is an independent distributor that specializes in hard-to-find and end-of-life power-management ICs, optocouplers, and interface devices like this DTMF receiver. We help engineers and buyers secure obsolete, allocated, and scarce parts with authenticity screening and global shipping. Request a quote (RFQ) today and our sourcing team will confirm availability, lead time, and pricing for the XD8870 to keep your production or service builds running.