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PDF MC146010 Data sheet ( Hoja de datos )
| Número de pieza | MC146010 | |
| Descripción | Low Power CMOS Photoelectric Smoke Detector IC | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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Freescale Semiconductor
Technical Data
Document Number: MC146010
Rev 0, 09/2005
Low Power CMOS Photoelectric
Smoke Detector IC
MC146010
The MC146010 is an advanced smoke detector component containing
sophisticated very-low power analog and digital circuitry. The IC, when used with
an infrared photoelectric chamber and a small number of external components,
will detect smoke by sensing scattered light from smoke particles. When
detection occurs, a pulsating alarm is sounded via on-chip push-pull drivers and
an external piezoelectric transducer.
The MC146010 provides both audible and visual alarms. Upon sensing a
normal smoke level, both alarms will be activated. It is possible to mute the
audible alarm for approximately eight minutes through the Integrated Mute
Function (IMF), although the LED will continue to flash at a high rate. This feature
is resettable through a pushbutton test. The IMF feature will be overridden by
remote smoke, high smoke level, timeout or reset.
The Alarm memory feature will allow for identification of an alarming detector.
Through a pushbutton test, the LED will flash rapidly if there was a previous
alarm condition detected at the unit.
The variable-gain photo amplifier allows direct interface to IR detector
(photodiode). The gain settings are determined by external capacitors and
compensation resistors. A two stage speed-up is incorporated into the smoke
monitor to minimize time and help reduce false triggering. Further reduction of
false triggering is also addressed with the double sample chamber sensitivity and
double I/O sample.
LOW POWER CMOS
PHOTOELECTRIC SMOKE
DETECTOR IC
16
1
ED SUFFIX
PLASTIC DIP
CASE 648-08
16
Features
1
• Integrated Mute Function (IMF) to Temporarily Disable Horn
• Alarm Memory to Help Identify Alarming Unit
www.DataSheet4U.com• Speed-Up Sampling Rate After First Detection of Smoke
EG SUFFIX
SOG PACKAGE
CASE 751G-04
• Double Sample for Degraded Chamber Sensitivity Monitor
• Digital Noise Filter on the I/O Pin
• Power-Up and Power-Down RESET
• Low-Battery Trip Point Set Externally
• Temporal Horn Pattern
• Operating Temperature: -10 to 75°C
• Operating Voltage Range: 6.0 to 12 V
• Average Supply Current: 6.5 µA
Device
MC146010ED
MC146010EG
ORDERING INFORMATION
Temp. Range
Case No.
-10 to 75°C
648-08
-10 to 75°C
751G-04
Package
Plastic Dip
SOG Package
© Freescale Semiconductor, Inc., 2005. All rights reserved.
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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.) (continued)
No. Symbol
Parameter
Test Condition
Clocks Min(1)
Typ(2)
Max(1)
Unit
13 tCH Silver and Brass Chirp Pulse Period Low Supply or Degraded 4096 38.9
Chamber Sensitivity
43
47.1 s
14 tW(CH) Silver and Brass Chirp Pulse Width Low Supply or Degraded
Chamber Sensitivity
1.0 9.5
10.5
11.5
15 tRR Rising Edge on IO to Smoke Alarm Remote Smoke, No local — — 2 sec(3) —
Response Time
smoke
ms
16 tstb Strobe Out Pulse Period
17
Smoke Test
Chamber Sensitivity Test
Without Local Smoke
1024
4096
9.67
38.9
10.8
43
11.83
47.1
s
s
18
Low Supply Test Without Local 4096 38.9
43
47.1 s
Smoke
19
Pushbutton Test/Speed-Up 128
1.2
1.3
1.5
s
20 tMUTE Mute time
Local smoke
— 7.0
10
14 min
1. Oscillator period T (T = Tr + Tf) is determined by the external components R1, R2 and C3 where Tr = (0.6931)R2*C3 and Tf = (0.6931)R1*C3.
The other timing characteristics are some multiple of the oscillator timing shown in the table. The timing shown should accommodate the
NFPA72, ANSI S3.41, and ISO8201 audible emergency evacuation signals.
2. Typicals are not guaranteed.
3. Time is typical-depends on what point in cycle the signal is applied.
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Sensors
Freescale Semiconductor
MC146010
5
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Table 4. MC146010 Test Mode Logic Table
Pin
Function
Type
Logic
Description
Pin 16, TEST
Test Mode 1 Trigger
Input
None Set a –Ve voltage to the pin and source 100 µA from
the pin to start Test Mode 1.
Pin 12, OSC CAP
Clock Input
Input
0 Internal clock low
1 Internal clock high
Pin 5, VDD
Pin 14, VSS
Pin 11, LED
Chip Power
Chip Ground
Built-in-Test for HUSH
Timer
Output
Output pulse active low for 8 Clocks every 128
Clocks.
Pin 4, STROBE
Analog Ground
Output
Output low when pin 12 is low.
Pin 6, IRED
IRED
Output
0 Output low when pin 12 is low.
1 Output high (3.0 V) when pin 12 is high.
Pin 3, DETECT
Pin 8, BRASS
Smoke Sensing Input
Input
Smoke Latch Indicator
Output
NO SMK: VDD-2.5 V – (1/Hi Gain)
SMK: VDD-2.5 V –(1/Low Gain)
HI SMK: VDD-2.5 V – (2/Low Gain)
0 Output low when smoke latch not set.
1 Output high when smoke latch set.
Pin 9, SILVER
Photo-Comparator
Indicator
Output
0 Output low when photo comparator not set.
1 Output high when photo comparator set.
Pin 7, I/O
Photo-Amp Routing
Enable
Input
0 Disable the function of Pin 1, 2, 10 and 15 in Test
Mode 1.
www.DataSheet4U.com1 Enable photoamplifier output routed to the pins and
enable pins 1, 2, 10 and 15 in test Mode 1.
Pin 15, LOW_BATT
Low Battery Trip Point
Input
Control photo amp. Gain and output routing
Pin 10, FEEDBACK
Feedback
Input
Control hysteresis
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Freescale Semiconductor
MC146010
11
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| PDF Descargar | [ Datasheet MC146010.PDF ] | |
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