RE46C127E16F Microchip Technology, RE46C127E16F Datasheet

IC SMOKE DETECTOR CMOS 16-DIP

RE46C127E16F

Manufacturer Part Number
RE46C127E16F
Description
IC SMOKE DETECTOR CMOS 16-DIP
Manufacturer
Microchip Technology
Type
Smoke Detectorr
Datasheet

Specifications of RE46C127E16F

Package / Case
16-DIP (0.300", 7.62mm)
Input Type
Logic
Output Type
Logic
Interface
CMOS
Current - Supply
9µA
Mounting Type
Through Hole
Product
Driver ICs - Various
Supply Voltage (max)
12 V
Supply Voltage (min)
6 V
Supply Current
9 uA
Maximum Operating Temperature
+ 60 C
Mounting Style
Through Hole
Maximum Turn-off Delay Time
95 ms
Maximum Turn-on Delay Time
190 ms
Minimum Operating Temperature
- 10 C
Number Of Drivers
2
Output Current
5 mA
Output Voltage
6.3 V
Ic Function
Ionization Smoke Detector IC With Interconnect & Timer Mode
Supply Voltage Range
6V To 12V
Operating Temperature Range
-10°C To +60°C
Digital Ic Case Style
DIP
No. Of Pins
16
Svhc
No
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
RE46C127
CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode
Product Specification
General Description
The RE46C127 is low power CMOS ionization type
smoke detector IC. With few external components this
circuit will provide all the required features for an
ionization type smoke detector.
An internal oscillator strobes power to the smoke
detection circuitry for 10.5mS every 1.66 seconds to
keep standby current to a minimum. A check for a low
battery condition is performed every 40 seconds when
in standby. A 2/3 duty cycle continuous horn pattern is
used for the alarm condition.
An interconnect pin allows multiple detectors to be
connected such that when one units alarms all units will
sound.
An internal 8 minute timer allows for a separate button
to be used for reduced sensitivity mode.
Although this device was designed for smoke detection
utilizing an ionization chamber it could be used in a
variety of security applications.
The RE46C127 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
Reverse Battery Time
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
T
V
T
T
I
STG
infd
DD
RB
io1
in
in
A
J
Features
TSTROBE
TSTART
Guard Outputs for Ion Detector Input
+/-0.75pA Detect Input Current
Internal Reverse Battery Protection
Low Quiescent Current Consumption (<6.5uA)
Available in 16L PDIP or 16L N SOIC
ESD Protection on all Pins
Internal Low Battery Detection
Interconnect up to 40 Detectors
8 Minute Timer for Sensitivity Control
Compatible with Allegro A5348
UL Recognized per File S24036
Available in Standard Packaging or RoHS Compliant
Pb Free Packaging.
LBADJ
RBIAS
FEED
VDD
LED
IO
Pin Configuration
-.3 to V
-10 to +22
-55 to 125
-10 to 60
VALUE
-.3 to 17
1
2
3
4
5
6
7
8
150
15
10
5
dd
+.3
16
15
14
13
12
11
10
9
GUARD2
DETECT
GUARD1
VSEN
OSCAP
HS
HB
VSS
UNITS
DS22174B-page 1
mA
°C
°C
°C
V
V
V
S
V

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RE46C127E16F Summary of contents

Page 1

... R&E International A Subsidiary of Microchip Technology Inc. RE46C127 CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode Product Specification General Description The RE46C127 is low power CMOS ionization type smoke detector IC. With few external components this circuit will provide all the required features for an ionization type smoke detector ...

Page 2

... IOL=500ua OL2 V 5 IOL=10mA, VDD=7.2V OL3 Alarm, Vio=Vdd-2V IOL1 I 2 Alarm, Vio=Vdd-2V or Vio=0V IOH1 At Conclusion of Local Alarm or Test, 2 IODMP Vio= =-10 to 60ºC, Note SET1 3 SET2 R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max Units 6 6.2 4 4.5 V 4.5 2 2.5 V -0. ...

Page 3

... From Start of Local Alarm to IO Active IODLY1 IO pulse width guaranteed to be filtered. 2 IOFILT IO as Input, No Local Alarm No Local Alarm input, From IO 2 IODLY2 active to Horn Active 4 No Alarm TPER R&E International A Subsidiary of Microchip Technology Inc. Limits Min Typ Max Units - - -50 50 ...

Page 4

... RE46C127 CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode Product Specification © 2009 Microchip Technology Inc. Functional Block Diagram R&E International A Subsidiary of Microchip Technology Inc. DS22174B-page 4 ...

Page 5

... Timer Mode – The transition of pin 1 (TSTART) from a high to low level initiates an 8 minute timer. During this 8 minute nominal period the open drain NMOS on pin 4 (TSTROBE) is strobed on with the internal clock. A resistor connected to this pin could be used to modify the detector sensitivity for the timer period. © 2009 Microchip Technology Inc. R&E International A Subsidiary of Microchip Technology Inc. DS22174B-page 5 ...

Page 6

... R3, R4 and C1 are typical values and may be adjusted to maximize sound pressure. C2 should be located as close as possible to the device power pins. Route the pin 8 PC board trace away from pin 7 to avoid coupling. © 2009 Microchip Technology Inc. R&E International A Subsidiary of Microchip Technology Inc. Typical Application Figure 2 DS22174B-page 6 ...

Page 7

... R3, R4 and C1 are typical values and may be adjusted to maximize sound pressure. C2 should be located as close as possible to the device power pins. Route the pin 8 PC board trace away from pin 7 to avoid coupling. © 2009 Microchip Technology Inc. Typical Single Button Application Figure 3 R&E International A Subsidiary of Microchip Technology Inc. DS22174B-page 7 ...

Page 8

... T T HON1 HOF1 T IODLY T I ODLY 2 Horn pattern not self completing for external alarm R&E International A Subsidiary of Microchip Technology Inc. Alarm; Low Battery No Alarm; Low Battery Pin 15 > Pin 13 Ouput High Z Low Battery Warning Chirp LED supressed in remote alarm mode DS22174B-page 8 ...

Page 9

... RE46C127 CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode Product Specification Oscillator 10.5mS Internal Clock TSTART T LOF3 LED Outputs High Z TSTROBE © 2009 Microchip Technology Inc. Timing Diagram (Timer Mode) 1.67S T TPER R&E International A Subsidiary of Microchip Technology Inc. DS22174B-page 9 ...

Page 10

... 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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