Datasheet > MC14568

MC14568

更新时间： 2024-09-27 04:59:27

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		/
页数	文件大小	规格书
11页	201K
描述
Low-Power CMOS Ionization Smoke Detector with Interconnect and Timer

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MC14568 数据手册

Document Number: MC14568

Rev. 1.0, 11/2006

Freescale Semiconductor

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Low-Power CMOS Ionization Smoke

Detector with Interconnect and Timer

MC14568

The MC14568, when used with an ionization chamber and a small number of

external components, will detect smoke. When smoke is sensed, an alarm is

sounded via an external piezoelectric transducer and internal drivers. This circuit

is designed to operate in smoke detector systems that comply with UL217 and

UL268 specifications.

An internal oscillator with associated logic controls the overall functionality by

powering down the device for 1.67 seconds and sensing smoke in a 10 ms

window. In this way, standby current consumption is reduced to between 5.0 and

9.0 µA, thus providing longer battery life. In addition, a networking capability

allows as many as 125 to be interconnected so that if any unit senses smoke, all

units will sound an alarm.

LOW-POWER CMOS IONIZATION

SMOKE DETECTOR WITH

INTERCONNECT AND TIMER

The MC14568 is supplied in a 16-pin dual in-line plastic package and is

designed to run on a power supply between 6 to 12 Volts.

Features

•

Speed-Up Sampling Rate of 40 ms of Internal Clock Period (Pin 12) After First

Detection of Smoke

P SUFFIX

ED SUFFIX (PB-FREE)

PLASTIC DIP

•

Timer Function for Reduced Sensitivity for a Nominal Period of 6.43 Minutes

(10 Minutes Max)

CASE 648-08

•

High-Smoke Detection in the “Reduced Sensitivity” Mode

Internal and External Low Battery Threshold

Internal and External Smoke Reference Settings

Guaranteed Power Up Without Random LED and Horn Chirps

Reversed Battery Protection

TIMER START

16 GUARD 2

I/O

LOW-V SET

TIMER OUT

LED

DETECT INPUT

GUARD 1

Low Leakage Detect Pin

13 SENSITIVITY SET

12 OSCILLATOR CAP

Metal Option to Add Double Chirp at End of Reduced Sensitivity Period;

Default is No Chirp

•

Pb-Free Packaging Designated by Suffix Code ED

VDD

HORN 2

10 HORN 1

TIMING R

VSS

ORDERING INFORMATION

FEEDBACK

Device

PC14568P/R2

PC14568ED/R2

Case No.

Package

Figure 1. Pin Connections

648-08

Plastic Dip

This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

12 3 4 5 6 7...11

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与MC14568相关器件

型号	品牌	获取价格	描述	数据表
MC14568BALD	MOTOROLA	获取价格	Binary Counter, 4000/14000/40000 Series, Asynchronous, Positive Edge Triggered, 4-Bit, Up
MC14568BALDS	MOTOROLA	获取价格	4000/14000/40000 SERIES, ASYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CDIP16, 620
MC14568BALS	MOTOROLA	获取价格	Counter, CMOS, CDIP16
MC14568BBEBS	MOTOROLA	获取价格	Counter, CMOS, CDIP16
MC14568BCL	MOTOROLA	获取价格	Phase Comparator and Programmable Counters
MC14568BCLD	MOTOROLA	获取价格	暂无描述
MC14568BCLDS	MOTOROLA	获取价格	Binary Counter, 4000/14000/40000 Series, Asynchronous, Positive Edge Triggered, 4-Bit, Up
MC14568BCLS	MOTOROLA	获取价格	Counter, CMOS, CDIP16
MC14568BCP	MOTOROLA	获取价格	Phase Comparator and Programmable Counters
MC14568BCPD	MOTOROLA	获取价格	4000/14000/40000 SERIES, ASYN POSITIVE EDGE TRIGGERED UP DIVIDE BYN COUNTER, PDIP16, PLAST

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