5347

SMOKE DETECTOR

with INTERCONNECT

and TIMER

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

9 V

LOW-V

SET

– SUPPLY

+ SUPPLY

I / O

TIMING RES.

FEEDBACK

DETECT.

IN

12

OSC. CAP.

POWER-ON

RESET

OSCILLATOR

& TIMING

LOGIC

SENSITIVITY

SET

+

–

GUARD

GUARD

HORN1

HORN

2

LED

TIMER OUT

TIMER

START

+V

+V

V

DD

1

2

3

4

5

8

11

10

7

12

6

13

9

14

15

16

V

DD

V

SS

Dwg. FC-001-2

FUNCTIONAL BLOCK DIAGRAM AND TYPICAL APPLICATION

Copyright © 1995, Allegro MicroSystems, Inc.