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Price Comparison for RE46C180E16F
Details for Microchip Technology


CMOS Programmable Ion Smoke Detector ASIC with Interconnect Timer Mode Alarm Mem
Buy Directly from Microchip Technology (4000 in Stock)
$0.9100 per unit
Series Information for RE46C180E16F - Microchip Technology


  • feature
    10-year E
  • feature
    9 Minute or 80 Second Timer for Sensitivity Control
  • feature
    Alarm Memory
  • feature
    Auto Alarm Locate
  • feature
    Guard Outputs for Ion Detector Input
  • feature
    Horn Synchronization
  • feature
    IO Filter and Charge Dump
  • feature
    Interconnect up to 40 Detectors
  • feature
    Internal Ionization Chamber Test
  • feature
    Internal Low Battery Test
  • feature
    Internal Power-On Reset and Power-up Low Battery Test
  • feature
    Low Quiescent Current Consumption
  • feature
    Programmable Chamber Voltage for Push-to-Test (PTT) and Chamber Test
  • feature
    Programmable HUSH Sensitivity
  • feature
    Programmable Hysteresis
  • feature
    Programmable Standby Sensitivity
  • feature
    Programmable u00b1150 mV Low Battery Set Point
  • feature
    Smart Interconnect
  • feature
    Temporal or Continuous Horn Pattern
  • feature
    u00b10.75 pA Detect Input Current
  • feature
    u00b15% All Internal Oscillator


The RE46C180 is a next generation low power, CMOS ionization-type, smoke detector IC. With minimal exter- nal components, this circuit will provide all the required features for an ionization-type smoke detector. An on-chip oscillator strobes power to the smoke detection circuitry for 5 ms every 10 seconds to keep the standby current to a minimum. A check for a Low Battery condition is performed every 80s and an ionization chamber test is performed once every 320s when in Standby. The temporal horn pattern complies with the National Fire Protection Association NFPA 72® National Fire Alarm and Signaling Code® for emergency evacuation signals. An interconnect pin allows multiple detectors to be con- nected, such that when one unit alarms, all units will sound. A charge dump feature quickly discharges the interconnect line when exiting a Local Alarm condition. The interconnect input is also digitally filtered. An internal 9 minute or 80s timer can be used for a Reduced Sensitivity mode. An alarm memory feature allows the user to determine whether the unit has previously entered a Local Alarm condition. Utilizing low-power CMOS technology, the RE46C180 is designed for use in smoke detectors that comply with the Standard for Single and Multiple Station Smoke Alarms, UL217 and the Standard for Smoke Detectors for Fire Alarm Systems, UL268.


Input Voltage:
IC Output Type:
Open Drain
Sensor Case Style:
No. of Pins:
Supply Voltage Min:
Supply Voltage Max:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
RoHS Phthalates Compliant:
No SVHC (27-Jun-2018)
Brief Features:
VGA and AGC Modes of Operation Differential Input and Output Programmable Detector AGC Setpoints
IC Function:
CMOS Ionization Smoke Detector ASIC
IC Package Type:
Operating Temperature Range:
-10°C to +60°C
Supply Voltage Range:
6V to 12V

Alternate Descriptions

Avnet America

Ionization Smoke Detector Temporal/Continuous Tone 16-Pin PDIP Tube

Avnet America product

Microchip Technology Inc

CMOS Programmable Ion Smoke Detector ASIC with Interconnect Timer Mode Alarm Mem

Future Electronics

RE46C180 Series 6 to 12 V CMOS Ionization Type Smoke Detector IC - PDIP-16