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| 型号： | MC145012EG |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC SMOKE DETECT PHOTOELEC 16SOIC |
| 标准包装： | 47 |
| 类型： | 烟雾探测器 |
| 输入类型： | 光电 |
| 输出类型： | 电压 |
| 电流 - 电源： | 8µA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
Document Number: MC145012
Rev 9.0, 11/2006
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2006. All rights reserved.
Photoelectric Smoke Detector IC with
I/O and Temporal Pattern Horn Driver
The CMOS MC145012 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
piezoelectric transducer.
The variable-gain photo amplifier allows direct interface to IR detectors
(photodiodes). 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
push-button 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-protected 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 pulsed load current from the LED pin. The trip point is set using two external
resistors. The supply for the MC145012 can be a 9.0 V battery.
A visible LED flash accompanying a pulsating audible alarm indicates a local-
smoke condition. A pulsating audible alarm with no LED flash indicates a remote-
smoke condition. A beep or chirp occurring virtually simultaneously with an LED
flash indicates a low-supply condition. A beep or chirp occurring halfway between
LED flashes indicates degraded chamber sensitivity. A low-supply condition does
not affect the smoke detection capability if VDD ≥ 6.0 V. Therefore, the low-supply
condition and degraded chamber sensitivity can be further distinguished by
performing a push-button (chamber) test.
Features
Circuit is designed to operate in smoke detector systems that comply with
UL217 and UL268 Specifications
Operating Voltage Range: 6.0 V to 12 V, Average Supply Current: 8
A
Operating Temperature Range: -10 to 60
°C
I/O Pin Allows Units to be Interconnected for Common Signalling
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
Supports NFPA 72, ANSI S3.41, and ISO 8201 Audible Emergency Evacuation
Signals
Ideal for battery-powered applications
Pb-Free Packaging Designated by Suffix Codes ED and EG
ORDERING INFORMATION
Device
Temp. Range
Case No.
Package
MC145012P
-55 to +125°C
648-08
16 Lead Plastic Dip
MC145012ED
16 PDIP (Pb-Free)
MC145012DW
751G-04
16 Lead SOICW
MCZ145012EG/R2
16 SOICW (Pb-Free)
MC145012
PHOTOELECTRIC SMOKE
DETECTOR IC WITH I/O AND
TEMPORAL PATTERN
HORN DRIVER
P SUFFIX
ED SUFFIX (PB-FREE)
PLASTIC DIP
CASE 648-08
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
DW SUFFIX
EG SUFFIX (PB-FREE)
SOIC PACKAGE
CASE 751G-04
Figure 1. Pin Connections
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC145012EGR2 | 功能描述:光电传感器 PHOTO SMKE DET/NFPA TONE RoHS:否 制造商:Omron Industrial 感应方式:Retroreflective 感应距离:2 m 光源:Infrared LED 放大器类型: 连接:Prewired Cable 输出配置:Light ON |
| MC145012P | 功能描述:IC SMOKE DETECTOR WITH I/O 16DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC145017P | 功能描述:IC SMOKE DETECT PHOTOELEC 16-DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC145018P | 功能描述:IC SMOKE DETECT PHOTOELEC 16-DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC145026D | 功能描述:锁相环 - PLL Encoder RoHS:否 制造商:Silicon Labs 类型:PLL Clock Multiplier 电路数量:1 最大输入频率:710 MHz 最小输入频率:0.002 MHz 输出频率范围:0.002 MHz to 808 MHz 电源电压-最大:3.63 V 电源电压-最小:1.71 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:QFN-36 封装:Tray |
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