MC14568

Low-Power CMOS Ionization Smoke Detector with Interconnect and Timer

TheMC14568,whenusedwithanionizationchamberandasmallnumberofexternalcomponents,willdetectsmoke.Whensmokeissensed,analarmissoundedviaanexternalpiezoelectrictransducerandinternaldrivers.ThiscircuitisdesignedtooperateinsmokedetectorsystemsthatcomplywithUL

MC14568B

Phase Comparator and Programmable Counters

TheMC14568Bconsistsofaphasecomparator,adivide–by–4,16,64or100counterandaprogrammabledivide–by–N4–bitbinarycounter(allpositive–edgetriggered)constructedwithMOSP–channelandN–channelenhancementmodedevices(complementaryMOS)inamonolithicstructure.TheMC14568Bhasbee