MICROCHIP RE46C180E16F 烟雾探测传感器, CMOS 可编程, 漏极开路, DIP, 16 引脚, 6 V, 12 V
The is a next generation Smoke Detector IC with low power, CMOS ionization. With minimal external components this circuit will provide all the required features for an ionization-type smoke detector. An on-chip oscillator strobes power to the smoke detection circuitry for 5ms every 10 seconds to keep the standby current to a minimum. A check for a Low Battery condition is performed every 80s and an ionization chamber test is performed once every 320s when in Standby. The temporal horn pattern complies with the National Fire Protection Association NFPA 72® National Fire Alarm and Signalling Code® for emergency evacuation signals. An interconnect pin allows multiple detectors to be connected, such that when one unit alarms, all units will sound. A charge dump feature quickly discharges the interconnect line when exiting a Local Alarm condition. The interconnect input is also digitally filtered.
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