Ion smoke detection circuit MC145018

Mc145018 / mc14467 is a low-power ion smoke detector circuit, which can form a high sensitivity smoke detection and alarm device after assembling an ion chamber and a few peripheral elements. When smoke is detected, the circuit drives an external Piezoelectric Horn to alarm. The circuit also has low power supply voltage alarm function and LED alarm function, mainly used in smoke alarm system.
Its characteristics are as follows:
1. Piezoelectric Horn Driver
2. Detect the double protection output of the input port and the double diode protection of the input port
3. Internal setting of low power supply voltage detection threshold, which can be adjusted by external resistance
4. Internal setting of smoke detection threshold, adjustable by external resistance
5. Smoke detection comparator output, built-in battery reverse connection protection
6. Power on reset setting circuit enters static mode
7. The sensitivity of smoke detection comparator meets ul217 and ul268 standards.
8. The alarm sound of Piezoelectric Horn conforms to nfpa72, ansi53.41 and iso8201 Audible emergency evacuation signal standard.
9. Package form: DIP16, SOP16