UM3561 Datasheet

UM3561A is a low-cost, low-power CMOS LSI designed for use in alarm and toy applications (a three siren sound generator). 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.

UM3561 features

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


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