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A5348CA 参数 Datasheet PDF下载

A5348CA图片预览
型号: A5348CA
PDF下载: 下载PDF文件 查看货源
内容描述: 烟雾探测器与互连和定时器 [SMOKE DETECTOR WITH INTERCONNECT AND TIMER]
分类和应用: 模拟IC信号电路光电二极管信息通信管理
文件页数/大小: 8 页 / 92 K
品牌: ALLEGRO [ ALLEGRO MICROSYSTEMS ]
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5348
SMOKE DETECTOR
WITH INTERCONNECT AND TIMER
The A5348CA 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 A5348CA 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.
Data Sheet
26110.3
TIMER START
I/O
LOW-V SET
TIMER OUT
LED
+ SUPPLY
TIMING RES.
FEEDBACK
1
2
3
4
5
6
7
8
V
SS
V
DD
LOGIC
16
15
14
13
12
11
10
9
GUARD 2
DETECT. IN
GUARD 1
SENSITIVITY
SET
OSC. CAP.
HORN 2
HORN 1
– SUPPLY
OSC. &
TIMING
HORN
DRIVER
Dwg. PC-004
FEATURES
s
s
s
s
s
s
s
s
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.
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
Internal Timer & Control for Reduced Sensitivity
Built-In Hysteresis Reduces False Triggering
Always order by complete part number:
A5348CA .