A5354CA ALLEGRO [Allegro MicroSystems], A5354CA Datasheet

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A5354CA

Manufacturer Part Number
A5354CA
Description
SMOKE DETECTOR WITH INTERCONNECT
Manufacturer
ALLEGRO [Allegro MicroSystems]
Datasheet
NO CONNECT.
NO CONNECT.
Supply Voltage Range,
Reverse Battery (10.5 V) ....................... 20 s
Input Voltage Range,
Input Current, I
Operating Temperature Range,
Storage Temperature Range,
CAUTION: CMOS devices have input static
protection but are susceptible to damage when
exposed to extremely high static electrical
charges.
TIMING RES.
ABSOLUTE MAXIMUM RATINGS
LOW-V SET
FEEDBACK
+ SUPPLY
(Voltages are referenced to V
V
V
T
T
DD
IN
A
S
LED
I / O
..................................... 0 C to +50 C
............................... -55 C to +125 C
........................ -0.3 V to V
................................ -0.5 V to +15 V
1
2
3
4
5
6
7
8
NC
NC
V
DD
IN
............................... 10 mA
DRIVER
LOGIC
OSC. &
TIMING
HORN
V
SS
16
15
14
13
12
11
10
9
DD
GUARD
GUARD
DETECT. IN
SENSITIVITY
SET
OSC. CAP.
HORN
HORN
– SUPPLY
+ 0.3 V
Dwg PC-004-1
SS
1
2
)
1
2
5354
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.
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.
package. It is rated for continuous operation over the temperature
range of 0 C to +50 C. Similar devices, with an internal timer to allow
for a period of reduced sensitivity (“hush”), are available as the
A5348CA.
FEATURES
Always order by complete part number: A5354CA .
Interconnect Up to 125 Detectors
Piezoelectric Horn Driver
Guard Outputs for Detector Input
Pulse Testing for Low Battery
Power-ON Reset
Internal Reverse Battery Protection
Built-In Hysteresis Reduces False Triggering
The A5354CA is a low-current, CMOS circuit providing all of the
The internal oscillator and timing circuitry keeps standby power to
The A5354CA is supplied in a low-cost, 16-pin dual in-line plastic
WITH INTERCONNECT
SMOKE DETECTOR

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A5354CA Summary of contents

Page 1

... The A5354CA 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, ...

Page 2

SMOKE DETECTOR with INTERCONNECT FUNCTIONAL BLOCK DIAGRAM AND TYPICAL APPLICATION + SUPPLY – LOW-V SET 13 + – SENSITIVITY SET + – – SUPPLY DETECT. GUARD 1 ...

Page 3

SMOKE DETECTOR with INTERCONNECT ELECTRICAL CHARACTERISTICS 8.2 M (unless otherwise noted). 7 Characteristic Supply Voltage Range Detector Input Current Input Offset Voltage Hysteresis Common Mode Range Active Guard Impedance Oscillator Period Oscillator Pulse Width Low ...

Page 4

... I/O Delay Supply Current NOTE 1: Negative current is defined as coming out of (sourcing) the specified device pin. NOTE 2: Alarm (Smoke) Condition is defined as V The A5354CA is a low-current CMOS circuit providing all of the required features for an ionization-type smoke detector. Oscillator. An internal oscillator operates with a period of 1.67 seconds during no- smoke conditions ...

Page 5

SMOKE DETECTOR with INTERCONNECT I/O. A connection is provided at pin 2 to allow multiple smoke detectors to be commoned. If any single unit detects smoke (I/O is driven high), all connected units will sound their associated horns after ...

Page 6

SMOKE DETECTOR with INTERCONNECT INTERNAL CLOCK HORN V2 IN I/O INTERNAL CLOCK HORN V2 OUT I/O I/O OPERATION REMOTE ALARM MODE CYCLES 2 CYCLES HORN OFF ON HORN NOT SELF COMPLETING WHEN IN REMOTE ONLY ALARM ...

Page 7

SMOKE DETECTOR with INTERCONNECT 16 0.280 0.240 1 0.070 0.045 0.210 MAX 0.015 MIN 0.022 0.014 16 7.11 6.10 1 1.77 1.15 5.33 MAX 0.39 MIN NOTES: 1. Lead thickness is measured at seating plane or below. 2. Lead ...

Page 8

... Ionization-Type Smoke Detector with Interconnect and Timer A5348CA Ionization-Type Smoke Detector with Interconnect, Timer, and Reverse-Battery Protection A5349CA Ionization-Type Smoke Detector with Interconnect and Timer for AC Line Operation A5354CA Ionization-Type Smoke Detector with Interconnect and Reverse-Battery Protection A5355CA Ionization-Type Smoke Detector with Interconnect and Reverse-Battery Protection A5358CA Photoelectric-Type Smoke Detector with Interconnect and Timer SAFETY & ...

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