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