RE46C121
CMOS Ionization Smoke Detector ASIC with Interconnect
Product Specification
R&E International
AC Electrical Characteristics at TA = 25°C, VDD=9V, OSCAP=.1uF, RBIAS=8.2MΩ, VSS=0V (unless
otherwise noted)
Parameter
Oscillator Period
Symbol
T
PER1
T
PER2
T
PW
T
LON
T
LOF1
T
LOF2
T
HON1
T
HON2
T
HOF1
T
HOF2
T
HOF3
Test
Pin
12
12
5
5
5
5
10,11
10,11
10,11
10,11
10,11
2
2
2
2
Test Conditions
No Alarm Condition
Alarm Condition
Operating
Operating
Standby, No Alarm
Alarm Condition
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
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
Min
1.34
37.5
9.1
9.1
32
.9
450
9.1
450
1.35
32
1.34
Limits
Typ
Max
1.67
41.5
10.5
10.5
40
1
500
10.5
500
1.5
40
1.67
0
450
2
45.8
12.9
12.9
48
1.1
550
12.9
550
1.65
48
2.0
Units
S
mS
mS
mS
S
S
mS
mS
mS
S
S
S
S
mS
S
Oscillator Pulse Width
LED On Time
LED Off Time
Horn On Time
Horn Off Time
IO Charge Dump Duration
IO Delay
IO Filter
Remote Alarm Delay
T
IODMP
T
IODLY1
T
IOFILT
T
IODLY2
.450
2.2
Note 4 – See timing diagram for Horn Temporal Pattern
Telephone 610.992.0727
Page 3 of 8
E-mail: rande@randeint.com
DS-RE46C121-010907
This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RANDE [ R & E INTERNATIONAL, INC. ]
