www.
DataSheet4U.
com Freescale Semiconductor Product Preview Document Number: MC14568 Rev.
1.
0, 11/2006 Low-Power CMOS Ionization Smoke Detector with Interconnect and Timer The MC14568, when used with an ionization chamber and a small number of external components, will detect smoke.
When smoke is sensed, an alarm is sounded via an external piezoelectric transducer and internal drivers.
This circuit is designed to operate in smoke detector systems that comply with UL217 and UL268 specifications.
An internal oscillator with associated logic controls the overall functionality by powering down the device for 1.
67 seconds and sensing smoke in a 10 ms window.
In this way, standby current consum...

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