A5366CA-T

A5366CA-T Datasheet

A5366

Part	Datasheet
A5366CA-T	A5366CA-T (pdf)

Related Parts	Information
A5366CLWTR-T	A5366CLWTR-T
A5366CA	A5366CA

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A5366 Photoelectric Smoke Detector with Interconnect and Timer Low average standby current for long battery life Interconnect up to 50 detectors Piezoelectric horn driver Low battery detection all internal Chamber sensitivity test and alarm Power-on reset POR Internal timer and control for reduced sensitivity mode Built-in circuits to reduce false triggering 6 to 12 V operating range ESD protection circuitry on all pins Temporal Horn Pattern, per UL217, NFPA72, and ISO8201 UL Recognized for UL217 or UL268 applications Packages: 16-pin DIP Package A 16-pin SOICW Package LW Not to scale The A5366 is a low-current BiCMOS circuit providing all of the required features for a photoelectric type smoke detector. This device can be used with an infrared photoelectric chamber to sense scattered light from smoke particles. A networking capability allows as many as 50 units to be interconnected so that if any unit senses smoke all units will sound an alarm. Special features are incorporated in the design to facilitate calibration and testing of the finished detector. The device is recognized by Underwriters Laboratories for use in smoke alarms that comply with Standard UL217, or UL268, per file #S2113. A variable-gain photoamplifier can be directly interfaced to an infrared emitter-detector pair. The amplifier gain levels are determined by two external capacitors and are internally selected depending on the operating mode. Low gain is selected during standby and timer modes. During a local alarm, this low gain is increased internally by approximately 10% to reduce false triggering. High gain is used during pushbutton test and to periodically monitor the chamber sensitivity during standby. The internal oscillator and timing circuitry keep standby power to a minimum by sensing for smoke for only 100 us every 10 s. A special sensing scheme is incorporated to minimize the time to an audible alarm and also to reduce false triggering. Chamber sensitivity is periodically monitored and two consecutive cycles of degraded sensitivity are required for a warning signal chirp to occur. The A5366 is supplied in a 16-pin dual in-line plastic package suffix A , and for surface mount, a 16-pin SOICW suffix LW . The lead Pb free versions suffix have 100% mattetin leadframe plating. The devices are rated for continuous operation over the temperature range of to 75°C. Typical Application Diagram Rx1 A kΩ 5 kΩ 560 Ω 4700 pF 200 kΩ 1 kΩ Smoke Chamber 100 uF 22 Ω To / from other units 220 Ω A5366 3 DETECT 4 STROBE 5 VDD TEST 16 HUSH 15 VSS 14 Push-to-Test 9V 22 uF Red LED 1500 pF 13 TIMING RES 100 kΩ 10 MΩ 6 IRED OSC CAP 12 330 Ω 7 I/O 8 HORN1 LED 11 FEEDBACK 10 HORN2 9 220 kΩ C

PDF Datasheet Preview

A5366

Photoelectric Smoke Detector with Interconnect and Timer

Low average standby current for long battery life Interconnect up to 50 detectors Piezoelectric horn driver Low battery detection all internal Chamber sensitivity test and alarm Power-on reset POR Internal timer and control for reduced sensitivity mode Built-in circuits to reduce false triggering 6 to 12 V operating range ESD protection circuitry on all pins Temporal Horn Pattern, per UL217, NFPA72, and ISO8201 UL Recognized for UL217 or UL268 applications

Packages:
16-pin DIP Package A
16-pin SOICW Package LW

Not to scale

The A5366 is a low-current BiCMOS circuit providing all of the required features for a photoelectric type smoke detector. This device can be used with an infrared photoelectric chamber to sense scattered light from smoke particles. A networking capability allows as many as 50 units to be interconnected so that if any unit senses smoke all units will sound an alarm. Special features are incorporated in the design to facilitate calibration and testing of the finished detector. The device is recognized by Underwriters Laboratories for use in smoke alarms that comply with Standard UL217, or UL268, per file #S2113.

A variable-gain photoamplifier can be directly interfaced to an infrared emitter-detector pair. The amplifier gain levels are determined by two external capacitors and are internally selected depending on the operating mode. Low gain is selected during standby and timer modes. During a local alarm, this low gain is increased internally by approximately 10% to reduce false triggering. High gain is used during pushbutton test and to periodically monitor the chamber sensitivity during standby.

The internal oscillator and timing circuitry keep standby power to a minimum by sensing for smoke for only 100 us every 10 s. A special sensing scheme is incorporated to minimize the time to an audible alarm and also to reduce false triggering. Chamber sensitivity is periodically monitored and two consecutive cycles of degraded sensitivity are required for a warning signal chirp to occur.

The A5366 is supplied in a 16-pin dual in-line plastic package suffix A , and for surface mount, a 16-pin SOICW suffix LW . The lead Pb free versions suffix have 100% mattetin leadframe plating. The devices are rated for continuous operation over the temperature range of to 75°C.

Typical Application Diagram

Rx1 A
kΩ 5 kΩ
560 Ω 4700 pF
200 kΩ
1 kΩ

Smoke Chamber
100 uF
22 Ω

To / from other units
220 Ω

A5366
3 DETECT 4 STROBE 5 VDD

TEST 16 HUSH 15

VSS 14

Push-to-Test
9V 22 uF

Red LED
1500 pF
13 TIMING RES
100 kΩ
10 MΩ
6 IRED

OSC CAP 12
330 Ω
7 I/O 8

HORN1

LED 11

FEEDBACK 10 HORN2 9
220 kΩ C

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Datasheet ID: A5366CA-T 516043