RE46C127

Specifications

Parameter Name	Value
Type	Ionization
Horn Driver Alarm Pattern	Continuous Tone
Low Battery Detect	True
Reverse Battery Protection	True
Alarm Interconnect	True
Sensitivty Timer	True
Powerup Low Battery	False
Operating Temperature Range (C)	-10C to 60C

Parameter NameValueTypeIonizationHorn Driver Alarm PatternContinuous ToneLow Battery DetectTrueReverse Battery ProtectionTrueAlarm InterconnectTrueSensitivty TimerTruePowerup Low BatteryFalseOperating Temperature Range (C)-10C to 60C




Description

The RE46C127 is low power CMOS ionization type smoke detector IC. With few external components this circuit RE46C127 will provide all the required features for an ionization type smoke detector. An internal oscillator strobes power to the smoke detection circuitry for 10.5mS every 1.66 seconds to keep standby current to a minimum. A check for a low battery condition is performed every 40 seconds when in standby. A 2/3 duty cycle continuous horn pattern is used for the alarm condition. An interconnect pin allows multiple detectors to be connected such that when one units alarms all units will sound. An internal 8 minute timer allows for a separate button to be used for reduced sensitivity mode. Although RE46C127 was designed for smoke detection utilizing an ionization chamber RE46C127 could be used in a variety of security applications. The RE46C127 was designed for use in smoke detectors that comply with Underwriters Laboratory Specification UL217 and UL268.