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RE46C166 반도체 회로 부품 판매점

CMOS Photoelectric Smoke Detector ASIC



Microchip Technology 로고
Microchip Technology
RE46C166 데이터시트, 핀배열, 회로
RE46C165/6/7/8
CMOS Photoelectric Smoke Detector ASIC
with Interconnect, Timer Mode and Alarm Memory
Features
• Temporal Horn Pattern or Continuous Tone
• Alarm Memory
• Sensitivity Control Times:
- 9 minutes (RE46C165/6)
- 1.2 minutes (RE46C167/8)
• I/O Filter and Charge Dump
• Interconnect up to 40 Detectors
• Internal Power-on Reset (POR)
• >2000V ESD Protection (HBM) on All Pins
• Low Quiescent Current Consumption (<8 µA)
• Internal Low Battery Detection and Chamber Test
• RoHS Compliant Lead-Free Packaging
Description
The RE46C165/6/7/8 devices are low-power, CMOS
photoelectric type, smoke detector ICs. With minimal
external components, these circuits will provide all the
required features for a photoelectric type smoke
detector.
Each 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 100 µs, 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 so when one unit alarms, all units will sound.
A charge dump feature will quickly discharge the
interconnect line when exiting a local alarm. The
interconnect input is also digitally filtered.
An internal timer allows for single button, push-to-test
to be used for a Reduced Sensitivity mode.
An alarm memory feature allows the user to determine
if the unit has previously entered a local alarm
condition.
Utilizing low-power CMOS technology, the
RE46C165/6/7/8 was designed for use in smoke
detectors that comply with Underwriters Laboratory
Specification UL217 and UL268.
2010-2016 Microchip Technology Inc.
DS20002251B-page 1


RE46C166 데이터시트, 핀배열, 회로
RE46C165/6/7/8
Package Types
C1
C2
DETECT
STROBE
VDD
IRED
IO
HORNB
RE46C165/6/7/8
PDIP, SOIC
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
TEST
VSEN
VSS
ROSC
COSC
LED
FEED
HORNS
Functional Block Diagram
VDD (5)
VSS (14)
VSEN (15)
R1
276K
R2
124K
STROBE (4)
DETECT (3)
C1 (1)
C2 (2)
TEST (16)
VDD – 5V
VDD – 3.5V
Photoamp
+
+
+
Reference
Logic
and
Timing
Bias and
Power
Reset
Oscillator
IO (7)
FEED (10)
HS (9)
HB (8)
LED (11)
IRED (6)
ROSC (13)
COSC (12)
DS20002251B-page 2
2010-2016 Microchip Technology Inc.




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RE46C166 detector

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