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RE46C141S16F データシート(PDF) 1 Page - Microchip Technology

部品番号 RE46C141S16F
部品情報  A Subsidiary of Microchip Technology Inc.
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

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R&E International
A Subsidiary of Microchip Technology Inc.
RE46C141
CMOS Photoelectric Smoke Detector ASIC with Interconnect
Product Specification
© 2009 Microchip Technology Inc.
DS22177B-page 1
General Description
The RE46C141 is 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.
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 100us every 8.1 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 32 seconds when in
standby. The temporal horn pattern supports the NFPA
72 emergency evacuation signal.
An interconnect pin allows multiple detectors to be
connected such that when one units alarms, all units
will sound.
The RE46C141 is recognized by Underwriters
Laboratories for use in smoke detectors that comply
with specification UL217 and UL268.
Features
Internal Power On Reset
Low Quiescent Current Consumption
Available in 16L PDIP, 16L N SOIC or 16L W SOIC
ESD Protection on all Pins
Interconnect up to 40 Detectors
Temporal Horn Pattern
Low Battery and Chamber Test
Compatible with Motorola MC145012
UL Recognized per File S24036
Available in Standard Packaging or RoHS
Compliant Pb Free Packaging.
Pin Configuration
16
1
TEST
C1
2
LBSET
C2
15
VSS
DETECT
3
14
STROBE
4
ROSC
13
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VALUE
UNITS
Supply Voltage
VDD
12.5
V
Input Voltage Range Except FEED, IO
Vin
-.3 to Vdd +.3
V
FEED Input Voltage Range
Vinfd
-10 to +22
V
IO Input Voltage Range
Vio1
-.3 to 17
V
Input Current except FEED
Iin
10
mA
Operating Temperature
TA
-25 to 75
°C
Storage Temperature
TSTG
-55 to 125
°C
Maximum Junction Temperature
TJ
150
°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are
stress ratings only and operation at these conditions for extended periods may affect device reliability.
This product utilizes CMOS technology with static protection; however proper ESD prevention procedures should be used when
handling this product. Damage can occur when exposed to extremely high static electrical charge.
COSC
5
12
VDD
IRED
IO
HORNB
LE
6
D
11
7
FEED
10
HORNS
8
9


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