SMOKE DETECTOR
Data Sheet 26110.5A
5355
NO CONNECT. 1 NC
I/O 2 LOW-V SET 3
LOGIC
NO CONNECT. 4 NC LED 5
OSC. & TIMING
+ SUPPLY 6...
Description
Data Sheet 26110.5A
5355
NO CONNECT. 1 NC
I/O 2 LOW-V SET 3
LOGIC
NO CONNECT. 4 NC LED 5
OSC. & TIMING
+ SUPPLY 6 V DD TIMING RES. 7
HORN DRIVER
FEEDBACK 8
16 GUARD 2 15 DETECT. IN
14 GUARD1
13
SENSITIVITY SET
12 OSC. CAP.
11 HORN 2 10 HORN 1 V SS 9 – SUPPLY
Dwg. PC-004-1
SMOKE DETECTOR WITH INTERCONNECT
The A5355CA 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 condi...
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