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A5368CA Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A5368CA Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 8 page SMOKE DETECTOR WITH INTERCONNECT AND TIMER The A5368CA is a low-current, CMOS circuit providing all of the required features for an ionization-type smoke detector. A networking capability allows as many as 125 units to be interconnected so that if any unit senses smoke, all units will sound an alarm. In addition, special features are incorporated to facilitate alignment and test of the finished smoke detector. This device is designed to comply with Underwriters Laboratories Specification UL217. The internal oscillator and timing circuitry keeps standby power to a minimum by powering down the device for 1.66 seconds and sensing smoke for only 10 ms. Every 24 on/off cycles, a check is made for low battery condition. By substituting other types of sensors, or a switch for the ionization detector, this very-low power device can be used in numerous other battery-operated safety/security applications. The A5368CA is supplied in a low-cost, 16-pin dual in-line plastic package. It is rated for continuous operation over the temperature range of 0 °C to +50°C. FEATURES s Interconnect Up to 125 Detectors s Piezoelectric Horn Driver s Guard Outputs for Detector Input s Pulse Testing for Low Battery s Power-ON Reset s Internal Reverse Battery Protection s Internal Timer & Control for Reduced Sensitivity s Built-In Hysteresis Reduces False Triggering s Temporal Horn Pattern Always order by complete part number: A5368CA . ABSOLUTE MAXIMUM RATINGS (Voltages are referenced to V SS) Supply Voltage Range, V DD ................................ -0.5 V to +15 V Reverse Battery (10.5 V) ....................... 20 s Input Voltage Range, V IN ........................ -0.3 V to V DD + 0.3 V Input Current, I IN ............................... 10 mA Operating Temperature Range, T A ..................................... 0 °C to +50°C Storage Temperature Range, T S ............................... -55 °C to +125°C CAUTION: CMOS devices have input static protection but are susceptible to damage when exposed to extremely high static electrical charges. 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 LOGIC OSC. & TIMING HORN DRIVER GUARD DETECT. IN GUARD SENSITIVITY SET OSC. CAP. HORN HORN – SUPPLY TIMER START I / O LOW-V SET TIMER OUT LED + SUPPLY TIMING RES. FEEDBACK 1 V DD Dwg. PC-004 2 2 1 VSS 5368 |
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