RE46C165E MICROCHIP [Microchip Technology], RE46C165E Datasheet

RE46C165E

Manufacturer Part Number

RE46C165E

Description

CMOS Photoelectric Smoke Detector ASIC with Interconnect, Timer Mode and Alarm Memory

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.RE46C165E.pdf (30 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

RE46C165E16F

Manufacturer:

MCP

Quantity:

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

RE46C165E16F

Manufacturer:

Microchip

Quantity:

296

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Features

• Temporal Horn Pattern or Continuous Tone

• Alarm Memory

• Sensitivity Control Times:

• I/O Filter and Charge Dump

• Interconnect up to 40 Detectors

• Internal Power-on Reset

• >2000V ESD Protection (HBM) on All Pins

• Low Quiescent Current Consumption (<8 µA)

• Internal Low Battery Detection and Chamber Test

• RoHS Compliant Lead-Free Packaging

 2010 Microchip Technology Inc.

- 9 minutes (RE46C165/6)

- 1.2 minutes (RE46C167/8)

with Interconnect, Timer Mode and Alarm Memory

CMOS Photoelectric Smoke Detector ASIC

RE46C165/6/7/8

Description

The RE46C165/6/7/8 devices are low-power, CMOS

photoelectric type, smoke detector ICs. With minimal

external components, these circuits will provide all the

required features for a photoelectric type smoke

detector.

Each 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 temporal horn pattern supports the

NFPA 72 emergency evacuation signal.

An interconnect pin allows multiple detectors to be

connected so when one unit alarms, all units will sound.

A charge dump feature will quickly discharge the

interconnect line when exiting a local alarm. The

interconnect input is also digitally filtered.

An internal timer allows for single button, push-to-test

to be used for a reduced sensitivity mode.

An alarm memory feature allows the user to determine

if the unit has previously entered a local alarm

condition.

Utilizing

RE46C165/6/7/8 was designed for use in smoke

detectors that comply with Underwriters Laboratory

Specification UL217 and UL268.

low-power

CMOS

technology,

DS22251A-page 1

the

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