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UM3561A Three Siren Sound Generator

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UM3561 is a low-cost, low-power CMOS LSI designed for use in alarm and toy applications. Since the integrated circuit includes oscillator and selector circuits, a compact sound module can be constructed with only a few additional components. The M3561 contains a programmed mask ROM to simulate siren sound.

Features:

  • Four sounds can be selected
  • Power on reset.
  • Typical 3V operating voltage
  • A magnetic speaker can be driven by connecting
  • 8-pin DIP package form an NPN transistor

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