Rato RT0620 Description : The RT0620 is a CMOS design for six different alarm sounds application. According to the priority of the select keys. The sound of RT0620 will be generated in cycling sequence, The SOFT CHIRP only be generated within 200ms of the first sound. Features : Pin Out : Auto Power off function Low Operating Voltage 2V~5V. CMOS process. On-chip RC oscillator. 6 different sounds. 6 prioritized keys for selecting 6 different sounds. Low stand by current. 200 ms SOFT CHIRP Absolute Maximum Rating: Symbol Parameter VCC Conditions Rating Unit Supply Voltage -0.3 ~ 6 V Vi Input Voltage -0.3 ~ VCC+0.3 V Vo Output Voltage -0.3 ~ VCC+0.3 V Tst Storage Temperature -40 ~ 125 °C Ttp Operating Temperature -20 ~ 70 °C Electrical Characteristics : VCC = 3V , Symbol Parameter VCC Operating Voltage Isb Conditions Temp. = 25°C Min. Typ. Max. Unit 2.0 3.0 5.0 V Stand-By Current 10 20 uA Iop Operating Current 300 500 uA Ioh BZ1, BZ2 VCC = 1.5V 1.0 mA Iol Driving Current VCC = 1.5V 1.0 mA Fop Operating Frequency 128 1 K Hz