Datasheet > RE46C144

RE46C144

更新时间： 2024-09-24 14:55:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
26页	1083K
描述
The RE46C144 is low power CMOS photoelectric type smoke detector IC. With minimal external compone

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RE46C144 数据手册

RE46C144

CMOS Photoelectric Smoke Detector ASIC with Interconnect

and Timer Mode

Features

General Description

• Internal Power-On Reset

The RE46C144 is a low-power, CMOS photoelectric-

type smoke detector IC. With minimal external

components, this circuit will provide all the required

features for a photoelectric-type smoke detector.

• Low Quiescent Current Consumption

• ESD Protection on all Pins

• Interconnect up to 40 Detectors

• 10 Minute Timer for Sensitivity Control

• 75% Duty Cycle Horn Pattern

• Internal Low Battery and Chamber Test

• Compatible with Allegro A5358

• UL Recognized per File S24036

The design incorporates a gain selectable photo

amplifier for use with an infrared emitter/detector pair.

An internal oscillator strobes power to the smoke

detection circuitry for 100 µs every 10 seconds to keep

standby current to a minimum. If smoke is sensed, the

detection rate is increased to verify an Alarm condition.

A High Gain mode is available for push-button chamber

testing.

A check for a low-battery condition and chamber

integrity is performed every 43 seconds, when in

Standby. The alarm horn pattern utilizes a 75% duty

cycle.

An interconnect pin allows multiple detectors to be

connected such that when one units alarms, all units

will sound.

An internal 10 minute timer can be used for a reduced

sensitivity mode.

The RE46C144 device is recognized by

Underwriters Laboratories for use in smoke

detectors that comply with specification UL217 and

UL268.

Package Types

RE46C144

PDIP, SOIC, SOICN

TEST

DETECT

STROBE

VSEN

V_SS

ROSC

V_DD

IRED

COSC

LED

FEED

HORNS

HORNB

 2009-2012 Microchip Technology Inc.

DS22180C-page 1

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RE46C144(16PDIP)	MICROCHIP	获取价格	RE46C144(16PDIP)
RE46C144_12	MICROCHIP	获取价格	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
RE46C144E	MICROCHIP	获取价格	RE46C144E
RE46C144E16F	MICROCHIP	获取价格	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
RE46C144S	MICROCHIP	获取价格	RE46C144S
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RE46C144S16TF	MICROCHIP	获取价格	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
RE46C144SW16F	MICROCHIP	获取价格	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
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