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RE46C127 데이터시트(PDF) 7 Page - Microchip Technology

부품명 RE46C127
부품 상세설명  CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

RE46C127 데이터시트(HTML) 7 Page - Microchip Technology

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RE46C127
CMOS Ionization Smoke Detector ASIC with
R&E International
Interconnect and Timer Mode
A Subsidiary of Microchip Technology Inc.
Product Specification
© 2009 Microchip Technology Inc.
DS22174A-page 7
Typical Single Button Application
Figure 3
Notes:
Select R5 and R6 for the correct level to test the ion chamber. The voltage level on pin 1 (TSTART) must be
greater than the VIH level to initiate the timer. Pin 1 has an internal 180K nominal pull down which must be
considered.
Select R9 to reduce sensitivity during the timer mode.
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.


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