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參數(shù)資料
| 型號(hào)： | MC145017P |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 6/10頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SMOKE DETECT PHOTOELEC 16-DIP |
| 標(biāo)準(zhǔn)包裝： | 25 |
| 類型： | 煙霧探測(cè)器 |
| 輸入類型： | 離子化 |
| 輸出類型： | 電壓 |
| 電流 - 電源： | 12µA |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 16-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 16-PDIP |
| 包裝： | 管件 |
Sensors
Freescale Semiconductor
5
MC145017
Archived by Freescale Semiconductor, Inc., 2009
Archive
Information
Archive
Information
battery, respectively. Pin 1 = VDD for smoke and Pin 4 = VDD
for low battery. In this mode and during the 10 ms power
strobe, chip current rises to approximately 50
μA.
Led Pulse
The 9-volt battery level is checked every 40 seconds
during the LED pulse. The battery is loaded via a 10 mA
pulse for 11.6 ms. If the LED is not used, it should be replaced
with an equivalent resistor such that the battery loading
remains at 10 mA.
Hysteresis
When smoke is detected, the resistor/divider network that
sets sensitivity is altered to increase sensitivity. This yields
approximately 100 mV of hysteresis and reduces false
triggering.
Figure 6. Typical Application as Ionization Smoke Detector
Figure 7. MC145017 Timing Diagram
MC145017
116
2
3
4
5
6
7
8
15
14
13
12
11
10
9
330
Ω
8.2 M
Ω
+
9 V
0.1
μF
1.5 M
Ω*
0.001
μF
220 k
Ω*
0.1
μF
1 M
Test
*NOTE: Component values may change depending on type of piezoelectric horn used.
OSC
Pin 12
Smoke - N
- Y
Low Bat - Y
- N
HYST
Pin 13
HORN - On
- Off
LED - Off
- On
23
4
5
6
7
9
8
1
No Smk
No Low Bat
LOW BATTERY CHIRP
OSC
Pin 12
Smoke - N
- Y
No Smk
23
24 1
6
12
18
24
Smoke
Latch Alarm Condition
( 100 mV Level Shift)
NFPA MOD
LOW BAT - Y
- N
HORN - ON
- OFF
LED - OFF
- ON
(Note 1)
24 Clocks
No Smoke, Low Battery
>>
NOTES:
1. Horn modulation is self-completing. When going from smoke to no smoke, the alarm condition will terminate only when horn is off.
2. Comparators are strobed once per cycle (1.65 sec for no smoke, 40 msec for smoke).
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