Photoelectric Smoke Detector IC with I/O For Line-Powered Applications

The CMOS MC145011 is an advanced smoke detector component containing sophisticated very–low–power analog and digital circuitry. The IC is used with an infrared photoelectric chamber. Detection is accomplished by sensing scattered light from minute smoke particles or other aerosols. When detection occurs, a pulsating alarm is sounded via on–chip push–pull drivers and an external piezoelectric transducer.

• Operating Voltage Range: 6 to 12 V
• Operating Temperature Range: 10 to 60°C
• Average Standby Supply Current (Visible LED Illuminated): 20 mA
• Power–On Reset Places IC in Standby Mode (Non–Alarm State)
• Electrostatic Discharge (ESD) and Latch Up Protection Circuitry on All Pins
• Chip Complexity: 2000 FETs, 12 NPNs, 16 Resistors, and 10 Capacitors