UM3561
Bowin Microelectronics _________________________________________________________ UM3561A Three Siren Sound Generator
Features • Four sounds can be selected • Typical 3V operating voltage • 8-pin DIP package form • Power on reset.
• A magnetic speaker can be driven by connecting an
NPN transistor
General Description 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.
Absolute Maximum Ratings DC Supply Voltage .
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