Datasheet Microchip RE46C152

R&E International
A Subsidiary of Microchip Technology Inc. RE46C152
CMOS Ionization Smoke Detector ASIC with Interconnect, Timer Mode and Tone Select
Product Specification General Description Features The RE46C152 is a low power CMOS ionization type
smoke detector IC. With few external components this
circuit 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. The Tone input allows for selection of a
temporal pattern or a 2/3 duty cycle continuous tone.
The temporal horn pattern supports the NFPA 72
emergency evacuation signal. >1500V ESD Protection (HBM) on all Pins
Guard Outputs for Ion Detector Input
+/-0.75pA Detect Input Current
Internal Reverse Battery Protection
Low Quiescent Current Consumption (<6.5uA)
16L PDIP
Internal Low Battery Detection
Power Up Low Battery Test
Interconnect up to 40 Detectors
Pin selectable horn patterns …