General Description
The RE46C120 is a low power CMOS ionization type smoke detector IC. With a few external components this circuit will provide all the required features for an ionization type smoke detector.

FEATUREs
• Guard Outputs for Ion Detector Input
• +/-0.75pA Detect Input Current
• Internal Reverse Battery Protection
• Internal Low Battery Detection
• Pin Selectable Horn Pattern
• Low Quiescent Current Consumption (<6.5uA)
• 16L PDIP
• ESD Protection on all Pins
• Compatible with MC145017, MC14467
• UL Recognized per File S24036
• Available in RoHS Compliant Pb Free Packaging