MIC1555 Datasheet PDF

MIC1555/1557 IttyBitty® RC Timer/Oscillator General Description The MIC1555 IttyBitty® CMOS RC timer/oscillator and MIC1557 IttyBitty® CMOS RC oscillator are designed to provide rail-to-rail pulses for precise time delay or frequency generation. The devices are similar in function to the industry standard “555”, without a frequency control (FC) pin or an opencollector discharge (D) pin. The threshold pin (THR) has precedence over the trigger (TR.

MIC1555/57 IttyBitty RC Timer/Oscillator Features • +2.7V to +18V Operation • Low Current - <1 μA Typical Shutdown Mode (MIC1557) - 200 μA Typical (TRG and THR Low) at 3V Supply • Timing from Microseconds to Hours • “Zero” Leakage Trigger and Threshold Inputs • 50% Square Wave with One Resistor, One Capacitor • Threshold Input Precedence Over Trigger Input • <15Ω Output On-Resistance • No Output Cross-Conduction Current Spikes • <0.005%/°C Tempe.