Outline Drawing t a The SC1240 are monolithic integrated circuits D . designed to replace the mechanical bell in w electro-acoustical converter. The devices can drive directly a piezocera mic converter (buzzer). The two tone frequencies generated are.

SC1245

SC12485

SC12487

SC12489

SC12

SC12-400-100

SC12-600-100

SC12-700-100

SC12-800-100

SC1200

SC1202

SC1202A

SC1205