RE46C126 Series

Continuous Horn Pattern, Detector Interconnect, Low Battery Detect

Catalog

Continuous Horn Pattern, Detector Interconnect, Low Battery Detect

Part	Current - Supply	Supplier Device Package	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case	Package / Case	Type	Input Type
Microchip Technology RE46C126E16F	9 µA	16-PDIP	Through Hole	-10 °C	60 °C	0.3 in	16-DIP	7.62 mm	Smoke Detector	Ionization

Catalog

Continuous Horn Pattern, Detector Interconnect, Low Battery Detect

Key Features

• * Guard Outputs for Ion Detector Input

• * +/-0.75pA Detect Input Current

• * Internal Reverse Battery Protection

• * Internal Low Battery Detection

• * Low Quiescent Current Consumption (<6.5uA)

• * Available in 16L PDIP or 16L N SOIC

• * ESD Protection on all Pins

• * Interconnect up to 40 Detectors

• * Compatible with MC14468

• * Available in Standard Packaging or RoHS Complaint Pb Free Packaging

Description

The RE46C126 is 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. 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 unit alarms all units will sound. Although this device was designed for smoke detection utilizing an ionization chamber it can be used in a variety of security applications.