A5367CA [Allegro]

The A5367 is a low-current BiCMOS circuit designed for ionization-type smoke detectors. It features networking capability for interconnecting up to 125 units, a piezoelectric horn driver, guard outputs for detector input, pulse testing for low battery detection, power-on reset, internal reverse battery protection, timer (Hush) mode for reduced sensitivity periods, built-in hysteresis to reduce false triggering, and temporal horn pattern compliance with UL217, NFPA72, and ISO8201. The device maintains minimal standby power consumption through an internal oscillator that powers down for 1.66 seconds and senses smoke for only 10 ms every cycle. It is UL Recognized for UL217 or UL268 applications and can be adapted for various battery-operated safety/security applications by substituting sensors or switches.