RE46C143S16F Microchip Technology, RE46C143S16F Datasheet

IC SMOKE DETECTOR CMOS 16-SOIC

RE46C143S16F

Manufacturer Part Number
RE46C143S16F
Description
IC SMOKE DETECTOR CMOS 16-SOIC
Manufacturer
Microchip Technology
Type
Smoke Detectorr
Datasheet

Specifications of RE46C143S16F

Package / Case
16-SOIC (3.9mm Width)
Input Type
Logic
Output Type
Logic
Interface
CMOS
Current - Supply
8µA
Mounting Type
Surface Mount
Product
Driver ICs - Various
Supply Voltage (max)
12 V
Supply Voltage (min)
6 V
Supply Current
5.5 uA
Maximum Operating Temperature
+ 75 C
Mounting Style
SMD/SMT
Maximum Turn-off Delay Time
92 ms
Maximum Turn-on Delay Time
277 ms
Minimum Operating Temperature
- 25 C
Number Of Drivers
2
Number Of Outputs
4
Output Current
5 mA
Output Voltage
7 V
Ic Function
Photoelectric Smoke Detector IC With Interconnect
Supply Voltage Range
6V To 12V
Operating Temperature Range
-25°C To +75°C
Digital Ic Case Style
SOIC
No. Of Pins
16
Svhc
No SVHC
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
RE46C143
CMOS Photoelectric Smoke Detector ASIC with Interconnect
Product Specification
General Description
The RE46C143 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 40 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.
The RE46C143 is recognized by Underwriters
Laboratories for use in smoke detectors that comply
with specification UL217 and UL268.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Input Voltage Range Except FEED, IO
FEED Input Voltage Range
IO Input Voltage Range
Input Current except FEED
Operating Temperature
Storage Temperature
Maximum Junction Temperature
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.
© 2009 Microchip Technology Inc.
A Subsidiary of Microchip Technology Inc.
R&E International
SYMBOL
T
V
V
V
V
T
T
I
STG
infd
DD
io1
in
in
A
J
Features
STROBE
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
75% Duty Cycle Horn Pattern
Low Battery and Chamber Test
Compatible with Motorola MC145010
UL Recognized per File S24036
Available in Standard Packaging or RoHS
Compliant Pb Free Packaging.
DETECT
HORNB
IRED
VDD
C2
C1
IO
Pin Configuration
-.3 to V
-10 to +22
-55 to 125
-.3 to +17
-25 to 75
VALUE
1
2
3
4
5
6
7
8
12.5
150
10
dd
+.3
16
15
14
13
12
11
10
9
TEST
LBSET
VSS
ROSC
COSC
LE
FEED
HORNS
UNITS
DS22178B-page 1
mA
D
°C
°C
°C
V
V
V
V

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RE46C143S16F Summary of contents

Page 1

... R&E International A Subsidiary of Microchip Technology Inc. RE46C143 CMOS Photoelectric Smoke Detector ASIC with Interconnect Product Specification General Description The RE46C143 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. ...

Page 2

... VDD=12V, Vin=VSS 16 VDD=12V, Vin=VSS 10 FEED=-10V VDD=12V, Vin=VDD, STROBE 1,2 active 3,12,15 VDD=12V, Vin=VDD 10 FEED=22V 16 Vin=VDD 7 Vin=VDD 7 Vin=17V, VDD=12 11,13 Output Off, Output=VSS 11,13 Output Off, Output=VDD R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max Units 5 6.2 4 ...

Page 3

... Local smoke, Push to Test or 1,2,3 Chamber Test, Note 1 - Internal Reference VDD=6V to 12V, STROBE Output 4 ST Voltage VDD=6V to 12V, IRED Output 6 Voltage 4,5 Active, VDD=6V to 12V 6,5 Active, VDD=6V to 12V R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max Units 5 -16 mA ...

Page 4

... IODMP Test From Start of Local Alarm IODLY1 Active IO pulse width guaranteed filtered Input, No Local IOFILT Alarm No Local Alarm, From IO Active 7 IODLY2 Horn Active R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ 9.4 10.5 Note 2 9.4 10 .67 LED IS NOT ON 9.7 10.5 2 ...

Page 5

... RE46C143 CMOS Photoelectric Smoke Detector ASIC with Interconnect Product Specification © 2009 Microchip Technology Inc. Functional Block Diagram Figure 1 R&E International A Subsidiary of Microchip Technology Inc. DS22178B-page 5 ...

Page 6

... This input is connected to a VDD reference voltage to set the low battery warning voltage. 16 TEST This input is used to invoke two test modes. This input has an internal pull-down. © 2009 Microchip Technology Inc. PIN DESCRIPTIONS DESCRIPTION R&E International A Subsidiary of Microchip Technology Inc. DS22178B-page 6 ...

Page 7

... C3 is typical for an alkaline battery. This capacitance should be increased to 4.7uF or greater for a carbon battery. 3. R10, R11 and C6 are typical values and may be adjusted to maximize sound pressure. © 2009 Microchip Technology Inc. Typical Application Figure 2 R&E International A Subsidiary of Microchip Technology Inc. DS22178B-page 7 ...

Page 8

... The interconnect input has a 500mS nominal digital filter. This allows for interconnection to other types of alarms (carbon monoxide for example) that may have a pulsed interconnect signal. © 2009 Microchip Technology Inc. R&E International A Subsidiary of Microchip Technology Inc. =.6931 * DS22178B-page 8 ...

Page 9

... The LED pin is used as a low battery indicator. For VDD above the low battery threshold the open drain NMOS is off. If VDD falls below the threshold the NMOS turns on. © 2009 Microchip Technology Inc. R&E International A Subsidiary of Microchip Technology Inc. Description DS22178B-page 9 ...

Page 10

... Chamber Test and Warning is Offset from Low Battery Test and Warning by 21.5 Seconds © 2009 Microchip Technology Inc. Timing Diagrams Standby, No Alarm (not to scale) T PER1 T ON2 T PLED1 Low Supply or Chamber Test Failure Low Battery Warning Chirp T HOF3 R&E International A Subsidiary of Microchip Technology Inc DS22178B-page 10 ...

Page 11

... IO Dump active only in local alarm, inactive if external alarm © 2009 Microchip Technology Inc. Timing Diagrams (continued) Local Alarm Timing (not to scale) T PER2 T PLED2 Horn Timing Local or Remote Alarm T T HON1 HOF1 Interconnect Timing T IODLY2 R&E International A Subsidiary of Microchip Technology Inc. No Alarm DS22178B-page 11 ...

Page 12

... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

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