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RE46C145

更新时间： 2024-11-05 03:37:23
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12页 186K
描述
CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode

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RE46C145 数据手册

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R&E International  
RE46C145  
CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode  
Product Specification  
Features  
General Description  
•
•
•
•
•
•
•
•
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Internal Power On Reset  
The RE46C145 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.  
Low Quiescent Current Consumption  
Available in 16L PDIP or 16L N 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  
Alternate Diagnostic Mode  
Available in Standard Packaging or RoHS  
Compliant Pb Free Packaging.  
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.  
Pin Configuration  
In the diagnostic mode the photo amplifier output is  
available on pin 15 for production calibration of the  
photo chamber.  
TEST  
VSEN  
VSS  
C1  
C2  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
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.  
DETECT  
STROBE  
ROSC  
COSC  
LED  
An interconnect pin allows multiple detectors to be  
connected such that when one units alarms, all units  
will sound.  
VDD  
IRED  
IO  
FEED  
HORNS  
An internal 10 minute timer can be used for a reduced  
sensitivity mode.  
HORNB  
Utilizing low power CMOS technology the RE46C145  
was designed for use in smoke detectors that comply  
with Underwriters Laboratory Specification UL217 and  
UL268.  
ABSOLUTE MAXIMUM RATINGS  
PARAMETER  
SYMBOL  
VALUE  
UNITS  
Supply Voltage  
VDD  
15  
V
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  
Vin  
Vinfd  
Vio1  
Iin  
TA  
TSTG  
TJ  
-.3 to Vdd +.3  
-10 to +22  
-.3 to 17  
10  
-25 to 75  
-55 to 125  
150  
V
V
V
mA  
°C  
°C  
°C  
Telephone 610.992.0727  
Page 1 of 12  
Facsimile 610.992.0734  
E-mail: rande@randeint.com  
DS-RE46C145-121806  
This datasheet contains PROPRIETARY and CONFIDENTIAL information.  
1234567...12

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