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RE46C165 Datasheet, PDF (8/30 Pages) Microchip Technology – CMOS Photoelectric Smoke Detector ASIC with Interconnect, Timer Mode and Alarm Memory
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RE46C165/6/7/8
AC ELECTRICAL CHARACTERISTICS (CONTINUED)
AC Electrical Characteristics: Unless otherwise indicated, all parameters apply at TA = -25° to 75°, VDD = 9V,
Typical Application (unless otherwise noted), VSS = 0V.
Parameter
Symbol
Test
Pin
Min
Typ
Max Units Clocks
Conditions
Smoke Test Period
TPER0 4, 6 9.6 10.7 11.7
s
IRED and STROBE
TPER1 4, 6 1.8 2.0 2.2
s
1024
192
Standby, no alarm
RE46C165/7 only
Standby, 1 valid smoke sample
4, 6 2.4 2.7 2.9
s
256 RE46C166/8 only
Standby, 1 valid smoke sample
TPER2 4, 6 0.9 1.0 1.1
s
96 RE46C165/7 only
Standby, after 2 consecutive
valid smoke samples
4, 6 1.2 1.3 1.5
s
128 RE46C166/8 only
Standby, after 2 consecutive
valid smoke samples
TPER3 4, 6 0.9 1.0 1.1
s
96 RE46C165/7 only
Local Alarm – (3 consecutive
valid smoke samples)
4, 6 1.2 1.3 1.5
s
128 RE46C166/8 only
Local Alarm – (3 consecutive
valid smoke samples)
TPER4 4, 6 300 333 367 ms
TPER5 4, 6 7.2 8.0 8.8
s
32 Push button test
768 RE46C165/7 only
In remote alarm
4, 6 9.6 10.7 11.7 s
TPER6 4, 6 38
43
47
s
1024
4096
RE46C166/8 only
In remote alarm
Chamber test or low battery test,
no alarm
Horn Operation (HORNB,HORNS,FEED)
Alarm On Time
THON1 8, 9 450 500 550 ms
8, 9 225 250 275 ms
Alarm Off Time
THOF1 8, 9 450 500 550 ms
8, 9 75 83 92 ms
Alarm Period
THOF2 8, 9 1.35 1.50 1.65
s
THPER1 8, 9 3.60 4.00 4.40
s
8, 9 0.30 0.33 0.37 s
Low Battery
or Chamber Fail
Horn On Time
THON2 8, 9 9.4 10.4 11.5 ms
48 RE46C165/7 only
Local or remote alarm, Note 2
24 RE46C166/8 only
Local or remote alarm, Note 3
48 RE46C165/7 only
Local or remote alarm, Note 2
8 RE46C166/8 only
Local or remote alarm, Note 3
144 RE46C165/7 only
Local or remote alarm, Note 2
384 RE46C165/7 only
Local or remote alarm, Note 2
32 RE46C166/8 only
Local or remote alarm, Note 3
1 Low battery or fail chamber test,
no alarm
Note 1:
2:
3:
4:
TPOSC and TIRON are 100% production tested. All other timing is verified by functional testing.
See timing diagram for Horn Temporal Pattern in Figure 3-2.
See timing diagram for Horn Continuous Pattern in Figure 3-3.
During Timer mode, the LED Period is 10.5 seconds. The LED period will return to 43 seconds at the
conclusion of the Timer mode.
DS22251A-page 8
 2010 Microchip Technology Inc.
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