Description

The MC14468P is a low-power CMOS ionization smoke detector IC with interconnect. It is designed to be used with an ionization chamber and external components to detect smoke. When smoke is sensed, it triggers an alarm through an external piezoelectric transducer and internal drivers. This IC is specifically designed for smoke detector systems that comply with UL217 and UL268 specifications.

Specifications and features

- Ionization Type with On-Chip FET Input Comparator

- Piezoelectric Horn Driver

- Guard Outputs on Both Sides of Detect Input

- Input-Production Diodes on the Detect Input

- Low-Battery Trip Point, Internally Set, can be Altered Via External Resistor

- Detect Threshold, Internally Set, can be Altered Via External Resistor

- Pulse Testing for Low Battery Uses LED for Battery Loading

- Comparator Output for Detect

- Internal Reverse Battery Protection

- Strobe Output for External Trim Resistors

- I/O Pin Allows Up to 40 Units to be Connected for Common Signaling

- Power-On Reset Prevents False Alarms on Battery Change

- Pb-Free Packaging Designated by Suffix Code ED

Application Scenarios

This MC14468P IC is commonly used in smoke detector systems that require ionization-based smoke detection. It is suitable for residential and commercial buildings, providing early warning for potential fire hazards.

Comparison

- Low-power CMOS design

- Compliant with UL217 and UL268 specifications

- Internal drivers for external piezoelectric transducer

- Flexible threshold and trip point adjustment

- Reverse battery protection

- Requires external ionization chamber and components