A5358(1996) 查看數據表（PDF） - Allegro MicroSystems
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A5358 Datasheet PDF : 12 Pages
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5358
PHOTOELECTRIC SMOKE DETECTOR
with INTERCONNECT and TIMER
AC ELECTRICAL CHARACTERISTICS, continued.
Characteristic
Strobe Pulse Period
Strobe Pulse Width
IRED Pulse Period
IRED Pulse Width
IRED Rise Time
IRED Fall Time
I/O to Active Delay
Rising Edge on I/O to Alarm
Horn Warning Pulse Period
Horn Warning Pulse Width
Horn ON Time
Horn OFF Time
Symbol
tst1
tst2
tst3
Test Conditions
No Local or Remote Smoke
After 1 of 3 Valid Samples
After 2 of 3 Valid Samples
and During Local Alarm
Test
Pin VDD
4
9
4
9
4
9
tst4
Remote Alarm
4
9
tst5
Chamber Test or Low Supply
4
9
Test, No Local Alarm
tst6
Pushbutton Test, No Alarm
tw(st)
tired1
No Local or Remote Smoke
tired2
After 1 of 3 Valid Samples
tired3
After 2 of 3 Valid Samples
and During Local Alarm
4
9
4
9
6
9
6
9
6
9
tired4
Remote Alarm
6
9
tired5
Chamber Test, No Local Alarm
6
9
tired6
Pushbutton Test, No Alarm
6
9
tw(ired)
6
9
tr(ired)
10% to 90%
6
t f(ired)
90% to 10%
6
td(io)
Local Alarm
7
9
tr(io)
No Local Alarm
7
9
thorn
Low Supply and Degraded
Chamber Sensitivity
8, 9 9
tw(horn)
Low Supply and Degraded
Chamber Sensitivity
8, 9 9
ton(horn)
toff(horn)
Local or Remote Alarm
Local or Remote Alarm
8, 9 9
8, 9 9
* Limits over the operating temperature range are based on characterization data.
Characteristics are production tested at +25°C only.
Typical values are at +25°C and are given for circuit design information only.
Min.
9.6
2.42
1.21
Limits
Typ. Max.
–
11.9
2.70 2.96
1.34 1.47
Units
s
s
s
9.67 10.8 11.8
s
38.9
–
47.1
s
300
336
370
ms
9.5
–
11.5 ms
9.6
–
11.9
s
2.42 2.70 2.96
s
1.21 1.34 1.47
s
9.67 10.8 11.8
s
38.9
–
47.1
s
300
336
370
ms
94
–
116
µs
–
–
30
µs
–
–
200
µs
–
0
–
s
–
–
1.34
s
38.9
–
47.1
s
9.5
–
11.5 ms
–
252
–
ms
–
84
–
ms
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