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MC146012 Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc

No. de pieza MC146012
Descripción Electrónicos  Low Power CMOS Photoelectric Smoke Detector IC
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Fabricante Electrónico  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC146012 Datasheet(HTML) 4 Page - Freescale Semiconductor, Inc

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Sensors
4
Freescale Semiconductor
MC146012
* TA = 25°C Only
Symbol
Parameter
Test Condition
Test
Pin
VDD
Min
Max
Unit
IIH
Pull-Down Current
Test
I/O
VIN = VDD
I/O VIN = VDD
I/O VIN = 17 V
16
7.0
12
9.0
9.0
12
0.5
25
-1.0
1.0
100
140
µA
µA
VOL
Low-Level Output Voltage
LED
Silver, Brass
IOUT = 10 mA
IOUT = 16 mA
11
8.9
6.5
6.5
0.6
1.0
V
VOH
High-Level Output Voltage
Silver, Brass
IOUT = -16 mA
8.9
6.5
5.5
V
VOUT
Output Voltage
Strobe
(For Line Regulation, See Pin Descriptions)
Inactive, IOUT = 1.0 µA
Active, IOUT = 100 to 500 µA
(Load Regulation)
4.0
9.0
9.0
VDD-0.1
VDD-5.4
VDD-4.6
V
IOH
High-Level Output Current
I/O
Local Smoke, VOUT = 4.5 V
Local Smoke, VOUT = VSS
(Short Circuit Current)
7.0
6.5
12
-4.0
-16
mA
IOZ
Off-State Output Leakage Current
LED
VOUT = VSS or VDD
11
12
±100
nA
VOL
Active
1.0 mA
6.5
0.5
V
VIC
Common Mode
C1, C2, Detect
Voltage Range
Local Smoke, Pushbutton, or
Chamber Sensitivity Test
——
VDD-4.0
VDD-2.0
V
VREF
Smoke Comparator
Internal
Reference Voltage
Local Smoke, Pushbutton, or
Chamber Sensitivity Test
——
VDD-3.9
VDD -3.1
V
VREF-HI High Smoke Comparator
Internal
Reference Voltage
Local Smoke, Pushbutton, or
Chamber Sensitivity Test
——
VREF-
0.52
VREF-0.48
V
Table 2. Electrical Characteristics (Voltages Referenced to VSS, TA = -10 to 60°C unless otherwise indicated.) (continued)
Table 3
. AC Electrical Characteristics (Refer to Timing Diagram Figure 3 and Figure 4. TA = 25°C, VDD = 9.0 V,
Component Values from Figure 5.)
No.
Symbol
Parameter
Test Condition
Clocks
Min(1)
Typ(2)
Max(1)
Unit
11/fOSC
Oscillator Period
Free-running Saw tooth
Measured at Pin 12
1.0
7.2
8.0
8.8
ms
2tLED
LED Pulse Period
No Local Smoke, and No
Remote Smoke
4096
28.8
32.4
35.2
s
3
Remote Smoke, but No
Local Smoke
Extinguished
4
Local Smoke
256
1.6
2.0
2.4
5
Pushbutton Test
256
1.6
2.0
2.4
Push button Test with
Alarm Memory
4.0
25.6
32
38.4
ms
6tw(LED),
tw(stb)
LED Pulse Width and Strobe
Pulse Width
Remote Smoke but No
Local Smoke
1.0
OFF
OFF
7
(tIRED)
(IRED Pulse Period)
Smoke Test
1024
7.2
8.1
8.8
s
8
Chamber Sensitivity Test,
Without Local Smoke
4096
28.8
32.4
35.2
9
Local Smoke, in Speed-Up
128
0.9
1.0
1.1
Pushbutton Test
128
0.9
1.0
1.1
10
tw(IRED)
IRED Pulse Width
Tf*
94
116
µs
11
tR
——
30
µs
12
tF
200
µs


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