RE46C191 datasheet(1/44 Pages) MICROCHIP

Part #	RE46C191

Description	CMOS Low-Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode

PDF	44 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

Logo

1 / 44 page

 2013-2023 Microchip Technology Inc. and its subsidiaries

DS20005225H-page 1

RE46C191

Features

• Two AA Battery Operation

• Low Quiescent Current Consumption

• Local Alarm Memory

• Interconnect Up to 40 Detectors

• Nine-Minute Timer for Sensitivity Control

• Temporal or Continuous Horn Pattern

• Internal Low Battery and Chamber Test

• All Internal Oscillator

• Internal Infrared Emitter Diode (IRED) Driver

• Adjustable IRED Drive Current

• Adjustable Hush Sensitivity

• Two Percent Low Battery Set Point

• Pin-for-Pin Compatible with RE46C190

General Description

The RE46C191 is a low-power, low-voltage CMOS

photoelectric-type smoke detector IC. With minimal

external components, this circuit provides all the

required features for a photoelectric-type smoke

detector.

The design incorporates a gain-selectable photo

amplifier for use with an infrared emitter/detector pair.

To keep the standby current to a minimum, an internal

oscillator strobes power to the smoke detection

circuitry every 10 seconds. 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 is performed every

86 seconds and the chamber integrity is tested once

every 43 seconds when in Standby mode. The temporal

horn pattern supports the NFPA 72 emergency

evacuation signal.

An interconnect pin allows multiple detectors to be

connected, such that when one unit alarms, all units

sound.

An internal nine-minute timer can be used for a

Reduced Sensitivity mode.

Package Types

RE46C191

SOIC

VSS

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IRED

VDD

TEST

TEST2

IRP

IRN

RLED

LX

VBST

HS

HB

IO

IRCAP

FEED

GLED

RE46C191

SSOP

VSS

1

2

3

4

5

6

7

8

20

19

18

17

16

15

14

13

IRED

VDD

TEST

NC

TEST2

NC

IRP

LX

VBST

HS

HB

IO

IRCAP

FEED

GLED

9

10

12

11

NC

IRN

RLED

NC

Note:

See Table 2-1 for pin descriptions.

CMOS Low-Voltage Photoelectric Smoke Detector ASIC

with Interconnect and Timer Mode

Similar Part No. - RE46C191

Manufacturer	Part #	Datasheet	Description
Microchip Technology	RE46C190	408Kb / 42P	CMOS Low Voltage Photoelectric Smoke Detector ASIC with Interconnect 2010
	RE46C190	408Kb / 42P	CMOS Low Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 08/04/10
	RE46C190S16F	408Kb / 42P	CMOS Low Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 08/04/10
	RE46C195	2Mb / 39P	CMOS Low-Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode Revision A March 2021
	RE46C195S16	2Mb / 39P	CMOS Low-Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode Revision A March 2021

More results

Similar Description - RE46C191

Manufacturer	Part #	Datasheet	Description
Microchip Technology	RE46C146	261Kb / 13P	CMOS Photoelectric Smoke Detector ASIC with Intelligent Interconnect and Timer Mode 2009
	RE46C140	257Kb / 13P	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 2009
	RE46C144	256Kb / 12P	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 2009
	RE46C145	259Kb / 12P	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 2009
	RE46C165	453Kb / 30P	CMOS Photoelectric Smoke Detector ASIC with Interconnect, Timer Mode and Alarm Memory 2010
	RE46C190	408Kb / 42P	CMOS Low Voltage Photoelectric Smoke Detector ASIC with Interconnect 2010
	RE46C144	1Mb / 26P	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 11/29/11
	RE46C145	1Mb / 26P	CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 11/29/11
	RE46C190S16F	408Kb / 42P	CMOS Low Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode 08/04/10
	RE46C195	2Mb / 39P	CMOS Low-Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode Revision A March 2021

More results

RE46C191 Datasheet(PDF) 1 Page - Microchip Technology

RE46C191 Datasheet(HTML) 1 Page - Microchip Technology

Similar Part No. - RE46C191

Similar Description - RE46C191

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

Datasheet Download

Link URL