5347
SMOKE DETECTOR
with INTERCONNECT
and TIMER
ELECTRICAL CHARACTERISTICS at T
A
= +25
°
C, V
DD
= 9.0 V, V
SS
= 0 V, C
12
= 0.1
µ
F,
R
7
= 8.2 M
Ω
(unless otherwise noted).
Characteristic
Supply Voltage Range
Detector Input Current
Input Offset Voltage
Test
Pin
6
15
14-15
16-15
15-13
Hysteresis
Common Mode Range
13
14-15
13-15
Active Guard Impedance
14
16
Oscillator Period
12
Limits
Test Conditions
Operating
0 to 40% RH, V
IN
= 0 to 9.0 V
Active Guard
Active Guard
Detect Comparator
No Alarm to Alarm
Guard Amplifier
Smoke Comparator
to V
SS
to V
SS
No Alarm
Alarm
Oscillator Pulse Width
Timer Period
Low Voltage Threshold
Sensitivity Adj. Voltage
Horn Output Voltage
4
4
6
13
10-11
After Pin 1 High-to-Low, No Smoke
T
A
= 0 to 50°C
V
13
/V
DD
, pin 13 open circuit
I
OUT
= 16 mA, V
DD
= 9.0 V
I
OUT
= 16 mA, V
DD
= 7.2 V
I
OUT
= -16 mA, V
DD
= 9.0 V
I
OUT
= -16 mA, V
DD
= 7.2 V
Horn Output ON Time
10-11
Alarm
Low Battery
Horn Output OFF Time
10-11
Alarm
Low Battery
Timer Start Logic Levels
1
V
IH
V
IL
Timer Start Input Current
1
V
IN
= 9.0 V
Min.
6.0
—
—
—
—
90
2.0
0.5
—
—
1.34
32
8.0
8.0
7.2
48.5
—
—
8.5
6.3
120
8.0
60
32
3.5
—
20
Typ.
9.0
—
—
—
—
130
—
—
10
500
1.67
40
10
10
—
50
0.1
—
8.8
—
160
10
80
40
—
—
—
Max.
12
±1.0
±100
±100
±50
170
V
DD
- 0.5
V
DD
- 2.0
—
—
2.00
48
12
12
7.8
51.5
0.5
0.9
—
—
208
12
104
48
—
1.5
80
Units
V
pA
mV
mV
mV
mV
V
V
kΩ
kΩ
s
ms
ms
min
V
%
V
V
V
V
ms
ms
ms
s
V
V
µA
NOTE 1: Negative current is defined as coming out of (sourcing) the specified device pin.
NOTE 2: Alarm (Smoke) Condition is defined as V
15
< V
13
; No Alarm (No Smoke) Condition as V
15
> V
13
.
Continued next page . . .
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
