RE46C121
CMOS Ionization Smoke Detector ASIC with Interconnect
R&E International
Product Specification
AC Electrical Characteristics at TA = 25°C, VDD=9V, OSCAP=.1uF, RBIAS=8.2MΩ, VSS=0V (unless
otherwise noted)
Limits
Typ Max Units
Test
Pin
Min
1.34
37.5
9.1
Parameter
Oscillator Period
Symbol
TPER1
TPER2
TPW
Test Conditions
No Alarm Condition
12
12
1.67
41.5
10.5
10.5
40
2
S
mS
mS
mS
S
Alarm Condition
45.8
12.9
12.9
48
Oscillator Pulse Width
LED On Time
Operating
5
Operating
TLON
5
9.1
LED Off Time
Standby, No Alarm
TLOF1
TLOF2
THON1
THON2
THOF1
THOF2
THOF3
TIODMP
TIODLY1
5
32
Alarm Condition
5
.9
1
1.1
S
Horn On Time
Horn Off Time
Operating, Alarm Condition, Note 4
Low Battery, No Alarm
Operating, Alarm Condition, Note 4
Operating, Alarm Condition, Note 4
Low Battery, No Alarm
At Conclusion of Local Alarm or Test
From Start of Local Alarm to IO Active
10,11
10,11
10,11
10,11
10,11
2
450
9.1
500
10.5
500
1.5
40
550
12.9
550
1.65
48
mS
mS
mS
S
450
1.35
32
S
IO Charge Dump Duration
IO Delay
1.34
1.67
0
2.0
S
2
S
IO Filter
IO pulse width guaranteed to be filtered.
IO as Input, No Local Alarm
No Local Alarm, IO as input, From IO
active to Horn Active
2
2
TIOFILT
450
2.2
mS
S
Remote Alarm Delay
TIODLY2
.450
Note 4 – See timing diagram for Horn Temporal Pattern
Telephone 610.992.0727
Page 3 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. ]
