MC146012中文资料Low Power CMOS Photoelectric Smoke Detector IC数据手册恩XP规格书

描述 Description

Overview The MC146012 is an advanced smoke detector component containing sophisticated very-low power analog and digital circuitry. The IC, when used with an infrared photoelectric chamber and a small number of external components, will detect smoke by sensing scattered light from smoke particles. When detection occurs, a pulsating alarm is sounded via on-chip push-pull drivers and an external piezoelectric transducer.
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特性 Features

•Integrated Mute Function (IMF) to Temporarily Disable Horn


•Alarm Memory to Help Identify Alarming Unit


•Speed-Up Sampling Rate After First Detection of Smoke


•Double Sample for Degraded Chamber Sensitivity Monitor


•Digital Noise Filter on the I/O Pin


•Power-Up and Power-Down RESET


•Low-Battery Trip Point Set: Externally


•Temporal Horn Pattern


•Operating Temperature: -10 to 75°C


•Average Supply Current: 6.5µA