RE46C121
CMOS Ionization Smoke Detector ASIC with Interconnect
R&E International
Product Specification
Timing Diagram
Pin 15 > Pin 13
Pin 13 > Pin 15; 130mV Level Shift on Pin 13
Pin 15 > Pin 13
1.67S
10mS
Internal Clock
24 Clock Cycles (40 S)
24 Clock Cycles (1S)
Floating
LED
DETCOMP (pin1)
Sample Smoke
STROBE (pin 4)
Horn
Floating
LowBattery Warning Chirp
SeeFigureBelowfor CompleteHornCycle
IO (Pin 2) as Output
IO Charge Dump
T
IODMP
T
IOFILT
IO ( Pin 2) as Input
LED supressed in remote alarm mode
T
IODLY2
Horn Start of horn temporal pattern is not synchronized to an external alarm
Horn pattern not self completing for external alarm- see timing belowfor complete horn cycle
Internal Clock
Notes:
1. Smoke is not sampled when the horn is active. Horn cycle is self completing in local alarm
2. Low battery warning chirp is suppressed in alarm
3. IO Dump active only in local alarm, inactive if external alarm
THON1 THOF1
THOF2
CompleteTemporal HornPattern
Telephone 610.992.0727
Page 7 of 8
Facsimile 610.992.0734
E-mail: rande@randeint.com
DS-RE46C121-010907
This datasheet contains PROPRIETARY and CONFIDENTIAL information.
RANDE [ R & E INTERNATIONAL, INC. ]
