5358
PHOTOELECTRIC SMOKE DETECTOR
with INTERCONNECT and TIMER
FUNCTIONAL BLOCK DIAGRAM
+ SUPPLY V DD
5
9V
BAND-GAP
REFERENCE
I/O
7
V DD
DETECT 3
C1 1
C2 2
STROBE 4
IRED 6
V DD
– SUPPLY
14
V SS
LOW BATTERY
PHOTO AMP
LOGIC
POWER-ON
RESET
OSCILLATOR
& TIMING
15
HUSH
16
TEST
FEEDBACK
10
9
HORN 2
8
HORN 1
11
+V
LED
TIMING RES.
+V
13
12
OSC. CAP.
Dwg. FC-006
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1995, 1996 Allegro MicroSystems, Inc.