SCT1555 - Zetex Semiconductors

SCT1555 PRECISION SINGLE CELL TIMER

These devices are precision timing circuits for generation of accurate time delays or oscillation. Advanced circuit design means that these devices can operate from a single battery cell with the minimum of quiescent current. In monostable mode time delays are controlled by a single resistor and capacitor network. In astable mode the frequency and du t y cy .

Features

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• 0.9V supply operating voltage guaranteed Pin connections comparable with 555 series timers Very low quiescent current 74 µA SO8 and DIL8 packages Operating temperature range compatible with battery technologies APPLICATIONS Portable and battery powered equipment Low voltage and low power systems SCHEMATIC DIAGRAM 8 VCC CONTROL 5 6 THRESH 2 TRIGGER 7 DISCHARGE 3 OUTPUT 4 RESET 1 GND 4-311 ZSCT1555 ABSOLUTE MAXIMUM RATINGS Supply Voltage Input Voltages (Cont, Reset, Thres, Trig) Output Current Operating Temperature Storage Temperature 9V 9V 100mA -20 to 100°C -55 to 150°C.