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MC14468 Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc

Part No. MC14468
Description  Low-Power CMOS Ionization Smoke Detector IC with Interconnect
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC14468 Datasheet(HTML) 4 Page - Freescale Semiconductor, Inc

   
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Sensors
4
Freescale Semiconductor
MC14468
Table 4. Timing Parameters
(C = 0.1
µF, R
bias = 8.2 MΩ, VDD = 9.0 V, TA = 25°C, See Figure 7)
Characteristics
Symbol
Min
Typ(1)
1. Data labelled “Typ'' is not to be used for design purposes, but is intended as an indication of the IC's potential performance.
Max
Units
Oscillator Period
No Smoke
Smoke
tCI
1.34
32
1.67
40
20
48
s
ms
Oscillator Rise Time
tR
8.0
10
12
ms
Horn Output
On Time
(During Smoke)
Off Time
PWON
PWOFF
120
60
160
80
208
104
ms
ms
LED Output
Between Pulses
On time
tLED
PWON
32
8.0
40
10
48
12
s
ms
Horn Output
On Time
(During Low Battery)
Between Pulses
tON
tOFF
8.0
32
10
40
12
48
ms
s
Figure 3. Typical LED Output
I-V Characteristic
Figure 4. Typical Comparator Output
I-V Characteristic
Figure 5. Typical P Horn Driver Output
I-V Characteristic
0
1
234
5
6
7
8
9
10
0.1
1.0
10.0
100.0
VDS, Drain To Source Voltage (Vdc)
VDD = 7.2 Vdc
VDD = 9.0 Vdc
TA = 25°C
0
1
234
5
6
7
8
9
10
0.01
0.1
1.0
10.0
VDS, Drain To Source Voltage (Vdc)
TA = 25°C
VDD = 9.0 Vdc or 7.2 Vdc
P-CH Source
and N-CH
Sink Current
0
1
234
5
6
7
8
9
10
1.0
10.0
100.0
1000.0
VDS, Drain To Source Voltage (Vdc)
VDD = 7.2 Vdc
VDD = 9.0 Vdc
TA = 25°C
P-CH Source Current
TA = 25°C
0
1
2
3
4
5
678
9
10
1.0
10.0
100.0
1000.0
VDS, Drain To Source Voltage (Vdc)
VDD = 7.2 Vdc
VDD = 9.0 Vdc
N-CH Sink Current
0
1
234
5
6
7
8
9
10


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Part NumberComponents DescriptionHtml ViewManufacturer
MC14568Low-Power CMOS Ionization Smoke Detector with Interconnect and Timer 1 2 3 4 5 MoreFreescale Semiconductor, Inc

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