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參數(shù)資料
| 型號(hào)： | MC145011DW |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, SOIC-16 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 346K |
| 代理商： | MC145011DW |
MC145011
Rev 4, 05/2005
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2005. All rights reserved.
Photoelectric Smoke Detector IC
with I/O For Line-Powered
Applications
The CMOS MC145011 is an advanced smoke detector component containing
sophisticated very-low-power analog and digital circuitry. The IC is used with an
infrared photoelectric chamber. Detection is accomplished by sensing scattered
light from minute smoke particles or other aerosols. When detection occurs, a
pulsating alarm is sounded via on-chip push-pull drivers and an external piezo-
electric transducer.
The variable-gain photo amplifier allows direct interface to IR detectors (pho-
to-diodes). Two external capacitors C1 and C2, C1 being the larger, determine
the gain settings. Low gain is selected by the IC during most of the standby state.
Medium gain is selected during a local-smoke condition. High gain is used during
pushbutton test. During standby, the special monitor circuit which periodically
checks for degraded chamber sensitivity uses high gain, also.
The I/O pin, in combination with VSS, can be used to interconnect up to 40
units for common signaling. An on-chip current sink provides noise immunity
when the I/O is an input. A local-smoke condition activates the short-circuit-pro-
tected I/O driver, thereby signaling remote smoke to the interconnected units.
Additionally, the I/O pin can be used to activate escape lights, enable auxiliary or
remote alarms, and/or initiate auto-dialers.
While in standby, the low-supply detection circuitry conducts periodic checks
using a load current from the LED pin. The trip point is set using two external re-
sistors. The supply for the MC145011 must be a dc power source capable of sup-
plying 35 mA continuously and 45 mA peak. When the MC145011 is in standby,
an external LED is continuously illuminated to indicate that the device is receiving
power.
An extinguished LED accompanied by a pulsating audible alarm indicates a
local-smoke condition. A pulsating audible alarm with the LED illuminated indi-
cates a remote-smoke condition. A beep or chirp indicates a low-supply condition
or degraded chamber sensitivity. A low-supply condition does not affect the
smoke detection capability if VDD ≥ 6 V. Therefore, the low-supply condition and
degraded chamber sensitivity can be distinguished by performing a pushbutton
(chamber) test. This circuit is designed to operate in smoke detector systems
that comply with UL217 and UL268 specifications.
Features
Operating Voltage Range: 6 to 12 V
Operating Temperature Range: -10 to 60
°C
Average Standby Supply Current (Visible LED Illuminated): 20 mA
Power-On Reset Places IC in Standby Mode (Non-Alarm State)
Electrostatic Discharge (ESD) and Latch Up Protection Circuitry on All Pins
Chip Complexity: 2000 FETs, 12 NPNs, 16 Resistors, and 10 Capacitors
ORDERING INFORMATION
Device
Package
MC145011P
Plastic Dip
MC145011DW
Soic Package
MC145011
P SUFFIX
PLASTIC DIP
CASE 648-08
DW SUFFIX
PLASTIC SOIC
CASE 751G-04
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
C1
C2
Detect
Strobe
VDD
IRED
I/O
Brass
Test
Low-Supply
Trip
VSS
R1
Osc
LED
Feedback
Silver
Figure 1. Pin Connections
PHOTOELECTRIC SMOKE
DETECTOR IC WITH I/O FOR
LINE-POWERED APPLICATIONS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC145011ED | 功能描述:光電傳感器 SMOKE DETECTOR RoHS:否 制造商:Omron Industrial 感應(yīng)方式:Retroreflective 感應(yīng)距離:2 m 光源:Infrared LED 放大器類型: 連接:Prewired Cable 輸出配置:Light ON |
| MC145011P | 功能描述:IC SMOKE DETECT PHOTOELEC 16-DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| MC145012DW | 功能描述:IC SMOKE DETECT WITH I/O 16SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| MC145012DWR2 | 制造商:Rochester Electronics LLC 功能描述:PHOTO SMKE DET/NFPA TONE - Bulk 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
| MC145012ED | 功能描述:煙霧報(bào)警器 SM DETECTOR W/NFPA TONE RoHS:否 制造商:ELMOS Semiconductor 描述/功能:Smoke detector controller 感應(yīng)方式:Photoelectric 工作電源電壓:24 V 輸出信號(hào)類型: |
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