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RE46C141E16F Datasheet

Download or read online Microchip Technology RE46C141E16F Photoelectric Smoke Detector IC W/temporal 16 PDIP .300in TUBE pdf datasheet.



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R&E International
A Subsidiary of Microchip Technology Inc.
RE46C141
CMOS Photoelectric Smoke Detector ASIC with Interconnect
Product Specification
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.
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
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
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
12.5
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
LBSET
VSS
ROSC
COSC
LE
D
FEED
HORNS
9
UNITS
V
V
V
V
mA
°C
°C
°C
DS22177B-page 1
Specifications of Microchip Technology RE46C141E16F
Current - Supply:
8µA
ID_COMPONENTS:
559331
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:
Through Hole
Mounting Type:
Through Hole
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-DIP (0.300", 7.62mm)
Product:
Driver ICs - Various
Rohs Compliant:
Yes
Sensor Case Style:
DIP
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
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:
30
Supply Voltage - Max:
12 V
Supply Voltage - Min:
6 V

Summary of Contents

Page 1

... R&E International A Subsidiary of Microchip Technology Inc. RE46C141 CMOS Photoelectric Smoke Detector ASIC with Interconnect Product Specification 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. ...

Page 2

... VDD12V, VinVSS 16 VDD12V, VinVSS 10 FEED-10V VDD12V, VinVDD, STROBE 1,2 active 3,12,15 VDD12V, VinVDD 10 FEED22V 16 VinVDD 7 VinVDD 7 Vin17V, VDD12 11,13 Output Off, OutputVSS 11,13 Output Off, OutputVDD 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 VDD6V to 12V, STROBE Output 4 ST 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 mA ...

Page 4

... At Conclusion of Local Alarm or 7 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 7.1 7.9 Note 2 7.1 7.9 28.8 32.4 .45 .5 LED IS NOT ON 7.3 8.1 1.8 2 ...

Page 5

... RE46C141 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. DS22177B-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. DS22177B-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. DS22177B-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 DS22177B-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 DS22177B-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 Timing, 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 DS22177B-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 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 DS22177B-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. © 2009, Microchip Technology Incorporated, Printed in the U ...

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