a5349 Allegro MicroSystems, Inc., a5349 Datasheet - Page 8

• Manufacturer Part Number: a5349
• Description: Ac Ionization Smoke Detector With Interconnect And Timer
• Manufacturer: Allegro MicroSystems, Inc.

A5349
Remote Alarm Condition
Smoke Chamber
Smoke Sample
Local Smoke Detection/Test Alarm Condition
Test event
Horn Enable
Horn Enable
LED Pin
I/O Pin
LED Pin
I/O Pin
OSC CAP Pin
Internal Clock
Smoke Sample
t
t
I/O Pin
on(horn)
r(io)
OSC CAP Pin
Internal Clock
V
DETECTIN
< V
6 clock cycles
t
osc(alarm)
SENSITIVITYSET
t
on(horn)
t
osc(alarm)
(smoke)
AC Ionization Smoke Detector
t
off(horn)
(Input)
with Interconnect and Timer
t
w(osc)
(Output)
LED off (high-Z)
t
off(horn)
t
w(osc)
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
LED on
(no smoke )
8