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5347 PDF даташит

Спецификация 5347 изготовлена ​​​​«Allegro MicroSystems» и имеет функцию, называемую «SMOKE DETECTOR WITH INTERCONNECT AND TIMER».

Детали детали

Номер произв 5347
Описание SMOKE DETECTOR WITH INTERCONNECT AND TIMER
Производители Allegro MicroSystems
логотип Allegro MicroSystems логотип 

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5347 Даташит, Описание, Даташиты
5347
SMOKE DETECTOR
WITH INTERCONNECT AND TIMER
TIMER START 1
I/O 2
LOW-V SET 3
TIMER OUT 4
LED 5
+ SUPPLY 6 V DD
TIMING RES. 7
FEEDBACK 8
LOGIC
OSC. &
TIMING
HORN
DRIVER
16 GUARD 2
15 DETECT. IN
14 GUARD1
13
SENSITIVITY
SET
12 OSC. CAP.
11 HORN 2
10 HORN1
VSS 9 – SUPPLY
Dwg. PC-004
The A5347CA 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 A5347CA 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.
ABSOLUTE MAXIMUM RATINGS
(Voltages are referenced to VSS)
Supply Voltage Range,
VDD ................................ -0.5 V to +15 V
Input Voltage Range,
VIN ........................ -0.3 V to VDD + 0.3 V
Input Current, IIN ............................... 10 mA
Operating Temperature Range,
TA ..................................... 0°C to +50°C
Storage Temperature Range,
TS ............................... -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.
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 Timer & Control for Reduced Sensitivity
s Built-In Hysteresis Reduces False Triggering
Always order by complete part number: A5347CA .









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5347 Даташит, Описание, Даташиты
5347
SMOKE DETECTOR
with INTERCONNECT
and TIMER
FUNCTIONAL BLOCK DIAGRAM AND TYPICAL APPLICATION
+ SUPPLY VDD
6
9V
I/O
2
V DD
FEEDBACK
8
3
LOW-V
SET
13
SENSITIVITY
SET
+
LOGIC
POWER-ON
RESET
11
HORN 2
10
HORN 1
5
LED
OSCILLATOR
& TIMING
TIMING RES.
7
OSC. CAP.
12
– SUPPLY
9
VSS
14 DETECT. 15
IN
GUARD 1
16
GUARD 2
1
TIMER
START
4
TIMER OUT
+V
+V
Dwg. FC-001-2
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1995, Allegro MicroSystems, Inc.









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5347 Даташит, Описание, Даташиты
5347
SMOKE DETECTOR
with INTERCONNECT
and TIMER
ELECTRICAL CHARACTERISTICS at TA = +25°C, VDD = 9.0 V, VSS = 0 V, C12 = 0.1 µF,
R7 = 8.2 M(unless otherwise noted).
Characteristic
Test
Pin
Test Conditions
Min.
Limits
Typ. Max.
Units
Supply Voltage Range
Detector Input Current
Input Offset Voltage
Hysteresis
6
15
14-15
16-15
15-13
13
Operating
0 to 40% RH, VIN = 0 to 9.0 V
Active Guard
Active Guard
Detect Comparator
No Alarm to Alarm
6.0 9.0 12 V
±1.0
pA
— — ±100 mV
— — ±100 mV
— — ±50 mV
90 130 170 mV
Common Mode Range
Active Guard Impedance
Oscillator Period
14-15
13-15
14
16
12
Guard Amplifier
Smoke Comparator
to VSS
to VSS
No Alarm
2.0
0.5
1.34
10
500
1.67
VDD - 0.5
VDD - 2.0
2.00
V
V
k
k
s
Alarm
32 40 48 ms
Oscillator Pulse Width
4
8.0 10 12 ms
Timer Period
Low Voltage Threshold
Sensitivity Adj. Voltage
Horn Output Voltage
Horn Output ON Time
4
6
13
10-11
10-11
After Pin 1 High-to-Low, No Smoke 8.0 10 12 min
TA = 0 to 50°C
V13/VDD, pin 13 open circuit
IOUT = 16 mA, VDD = 9.0 V
IOUT = 16 mA, VDD = 7.2 V
IOUT = -16 mA, VDD = 9.0 V
IOUT = -16 mA, VDD = 7.2 V
Alarm
7.2 — 7.8 V
48.5
50
51.5
%
— 0.1 0.5 V
— — 0.9 V
8.5 8.8 — V
6.3 —
—V
120 160 208 ms
Low Battery
8.0 10 12 ms
Horn Output OFF Time
10-11
Alarm
60 80 104 ms
Low Battery
32 40 48 s
Timer Start Logic Levels
Timer Start Input Current
1 VIH
VIL
1 VIN = 9.0 V
3.5 —
—V
— — 1.5 V
20 — 80 µA
NOTE 1: Negative current is defined as coming out of (sourcing) the specified device pin.
NOTE 2: Alarm (Smoke) Condition is defined as V15 < V13; No Alarm (No Smoke) Condition as V15 > V13.
Continued next page . . .










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