UM66 Melody Generator IC – CMOS LSI Sound Chip for Doorbells, Toys, Al

What is this?

The UM66 Melody Generator IC is a popular and compact CMOS LSI sound chip , pre-programmed to play a melody when powered. Ideal for use in doorbells, greeting cards, toys, and alarms , it operates on ultra-low power and delivers a crisp melody output with minimal external components.

What can I build with it?

• General electronics and robotics prototyping
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Compatibility notes

No verified pin/voltage metadata in our engineering catalog for this title. Treat electrical details as unverified until you check the datasheet.

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Specifications

• UM66 Melody Generator IC – CMOS LSI Sound Chip for Doorbells, Toys, Alarms
• The UM66 Melody Generator IC is a popular and compact CMOS LSI sound chip , pre-programmed to play a melody when powered. Ideal for use in doorbells, greeting cards, toys, and alarms , it operates on ultra-low power and delivers a crisp melody output with minimal external components.
• This IC is part of the UM66TXXL series , each version offering different pre-programmed tunes. It includes an internal oscillator circuit , allowing for simplified circuit designs—just add a transistor and speaker to create a complete musical output system.
• Thanks to its built-in ROM and CMOS technology , the UM66 consumes minimal power, making it perfect for battery-operated applications. It is a favorite in DIY hobby electronics , school projects, and embedded sound modules.
• 🎶 Built-in ROM with pre-recorded melody
• ⚙️ On-chip Oscillator – Requires only a few external components
• 🔋 Ultra-Low Power Consumption – Ideal for battery-powered circuits
• 💡 Wide Voltage Range – Typically 1.5V to 4.5V

Listed from catalog data. Treat as merchant-provided, not independently lab-verified, unless noted above.

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