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RE46C144E16F Datasheet

Download or read online Microchip Technology RE46C144E16F IC SMOKE DETECTOR CMOS 16-DIP pdf datasheet.



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R&E International
A Subsidiary of Microchip Technology Inc.
RE46C144
CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
Product Specification
General Description
The RE46C144 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 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.
An internal 10 minute timer can be used for a reduced
sensitivity mode.
The RE46C144 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
75% Duty Cycle Horn Pattern
Internal Low Battery and Chamber Test
Compatible with Allegro A5358
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
HORNS
9
UNITS
V
V
V
V
mA
°C
°C
°C
DS22180B-page 1
Specifications of Microchip Technology RE46C144E16F
Current - Supply:
8µA
Digital Ic Case Style:
DIP
ID_COMPONENTS:
1958669
Ic Function:
Photoelectric Smoke Detector IC With Interconnect & Timer Mode
Input Type:
Logic
Interface:
CMOS
Lead Free Status / Rohs Status:
Lead free / RoHS Compliant
Maximum Operating Temperature:
+ 75 C
Maximum Turn-off Delay Time:
92 ms
Maximum Turn-on Delay Time:
277 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:
4
Operating Temperature Range:
-25°C To +75°C
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
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
Factory Pack Quantity:
30

Summary of Contents

Page 1

... R&E International A Subsidiary of Microchip Technology Inc. RE46C144 CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode Product Specification General Description The RE46C144 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 15,16 VDD12V, VinVSS 10 FEED-10V VDD12V, VinVDD, STROBE 1,2 active 3, 10, 12 VDD12V, VinVDD 10 FEED22V 16 VinVDD 15 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

... 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 No Alarm Condition, Note 2 TPER R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max Units 9.4 10.5 11.5 mS 9.4 10.5 11 ...

Page 5

... RE46C144 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. DS22180B-page 5 ...

Page 6

... 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. DS22180B-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. DS22180B-page 7 ...

Page 8

... 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 DS22180B-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. 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. DS22180B-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. T HON3 DS22180B-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 DS22180B-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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