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RE46C140S16F Datasheet

Download or read online Microchip Technology RE46C140S16F Photoelectric Smoke Detector IC W/temporal, Timer 16 SOIC .150in TUBE pdf datasheet.



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R&E International
A Subsidiary of Microchip Technology Inc.
RE46C140
CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
Product Specification
General Description
The RE46C140 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 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 such that when one units alarms, all units
will sound.
An internal 10 minute timer can be used for a reduced
sensitivity mode.
The RE46C140 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.
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
10 Minute Timer for Sensitivity Control
Temporal Horn Pattern
Internal Low Battery and Chamber Test
Compatible with Allegro A5366
UL Recognized per File S24036
Available in Standard Packaging or RoHS
Compliant Pb Free Packaging.
Pin Configuration
C1
1
16
C2
2
15
DETECT
3
14
STROBE
4
13
5
12
VDD
6
11
IRED
IO
7
10
HORNB
8
SYMBOL
VALUE
V
15
DD
V
-.3 to V
+.3
in
dd
V
-10 to +22
infd
V
-.3 to 17
io1
I
10
in
T
-25 to 75
A
T
-55 to 125
STG
T
150
J
TEST
VSEN
VSS
ROSC
COSC
LE
D
FEED
9
HORNS
UNITS
V
V
V
V
mA
°C
°C
°C
DS22179B-page 1
Specifications of Microchip Technology RE46C140S16F
Current - Supply:
8µA
ID_COMPONENTS:
559538
Ic Output Type:
Voltage
Input Type:
Logic
Input Voltage:
17V
Interface:
CMOS
Lead Free Status / Rohs Status:
Lead free / RoHS Compliant
Maximum Operating Temperature:
+ 75 C
Maximum Turn-off Delay Time:
550 ms
Maximum Turn-on Delay Time:
550 ms
Minimum Operating Temperature:
- 25 C
Mounting Style:
SMD/SMT
Mounting Type:
Surface Mount
No. Of Pins:
16
Number Of Drivers:
2
Number Of Outputs:
3
Output Current:
5 mA
Output Type:
Logic
Output Voltage:
7 V
Package / Case:
16-SOIC (3.9mm Width)
Product:
Driver ICs - Various
Rohs Compliant:
Yes
Sensor Case Style:
SOIC
Series:
-
Supply Current:
5.5 uA
Supply Voltage (max):
12 V
Supply Voltage (min):
6 V
Supply Voltage Range:
6V To 12V
Type:
Smoke Detector
Product Category:
Smoke Detectors
RoHS:
yes
Description/Function:
CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
Sensing Method:
Photoelectric
Operating Supply Voltage:
6 V to 12 V
Output Signal Type:
Temporal Tone
Operating Temperature Range:
- 25 C to + 75 C
Factory Pack Quantity:
50
Supply Voltage - Max:
12 V
Supply Voltage - Min:
6 V

Summary of Contents

Page 1

... R&E International A Subsidiary of Microchip Technology Inc. RE46C140 CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode Product Specification General Description The RE46C140 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

... VDD12V, VinVSS 12,10 VDD12V, VinVSS 15,16 FEED-10V 10 1,2 VDD12V, VinVDD, STROBE active VDD12V, VinVDD 3,12,10 FEED22V 10 VinVDD 16 VinVDD 15 VinVDD 7 Vin17V, VDD12 7 Output Off, OutputVSS 11,13 Output Off, OutputVDD 11,13 R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max Units 5 6.2 4.5 V 3 ...

Page 3

... Local smoke, Push to Test or 1,2,3 Chamber Test, Note 1 - Internal Reference, Note 1 VDD6V to 12V, STROBE Output 4 Voltage VDD6V to 12V, IRED Output 6 Voltage 4,5 Active, VDD6V to 12V 6,5 Active, VDD6V to 12V R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max Units 5 -16 ...

Page 4

... At Conclusion of Local Alarm or 7 Test Alarm From Start of Local Alarm Active IO pulse width guaranteed filtered Input, No Local Alarm No Local Alarm, From IO Active 7 Horn Active No Alarm Condition, Note 2 TPER R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max 9.4 10.5 11.5 9.4 10.5 11 .45 .5 ...

Page 5

... RE46C140 CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode Product Specification 2009 © Microchip Technology Inc. R&E International A Subsidiary of Microchip Technology Inc. DS22179B-page 5 ...

Page 6

... RE46C140 CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode Product Specification 2009 © Microchip Technology Inc. Functional Block Diagram Figure 1 R&E International A Subsidiary of Microchip Technology Inc. DS22179B-page 6 ...

Page 7

... In the timer mode this input pin can be used to set an external smoke comparator reference. 16 TEST This input is used to invoke two test modes and the timer mode. This input has an internal pull-down. 2009 © Microchip Technology Inc. PIN DESCRIPTIONS DESCRIPTION R&E International A Subsidiary of Microchip Technology Inc. DS22179B-page 7 ...

Page 8

... 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. DS22179B-page 8 ...

Page 9

... The interconnect input has a 670mS 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 DS22179B-page 9 ...

Page 10

... 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. are in place and a high to low transition occurs on the TEST input the adj2 Description R&E International A Subsidiary of Microchip Technology Inc. DS22179B-page 10 ...

Page 11

... 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. T HON3 DS22179B-page 11 ...

Page 12

... 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 Local or Remote Alarm Horn Temporal Pattern HON1 HOF1 HOF2 Interconnect Timing T IODLY2 R&E International A Subsidiary of Microchip Technology Inc. No Alarm DS22179B-page 12 ...

Page 13

... 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. © 2009, Microchip Technology Incorporated, Printed in the U ...

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