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RE46C191 Datasheet(PDF) 7 Page - Microchip Technology

Part # RE46C191
Description  CMOS Low-Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
PDF  44 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

RE46C191 Datasheet(HTML) 7 Page - Microchip Technology

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 2013-2023 Microchip Technology Inc. and its subsidiaries
DS20005225H-page 7
RE46C191
AC ELECTRICAL CHARACTERISTICS
AC Electrical Characteristics: Unless otherwise indicated, all parameters apply at TA = -10° to +60°C, VDD = 3V, 
VBST = 4.2V, Typical Application (unless otherwise noted) (Notes 1 through 4).
Parameter
Symbol Test Pin
Min.
Typ.
Max.
Units
Conditions
Time Base
Internal Clock Period
TPCLK
—
9.80
10.4
11.0
ms
PROGSET, IO = High
RLED Indicator
On Time
TON1
RLED
9.80
10.4
11.0
ms
Operating
Standby Period
TPLED1
RLED
320
344
368
s
Standby, no alarm
Local Alarm Period
TPLED2A
RLED
470
500
530
ms
Local Alarm condition
with temporal horn
pattern
TPLED2B
RLED
625
667
710
ms
Local Alarm condition
with continuous horn
pattern
Hush Timer Period
TPLED4
RLED
10
10.7
11.4
s
Timer mode, no local
alarm
External Alarm
Period
TPLED0
RLED
LED IS NOT ON
s
Remote alarm only
GLED Indicator
On Time
TON2
GLED
9.8
10.4
11.0
ms
Operating
Latched Alarm Period
TPLED3
GLED
40
43
46
s
Latched Alarm condition,
LED enabled
Latched Alarm Pulse
Train (3x) Off Time
TOFLED
GLED
1.25
1.33
1.41
s
Latched Alarm condition,
LED enabled
Latched Alarm LED
Enabled Duration
TLALED
GLED
22.4
23.9
25.3
Hours
Latched Alarm condition,
LED enabled
Smoke Check
Smoke Test Period
with Temporal Horn
Pattern
TPER0A
IRED
10
10.7
11.4
s
Standby, no alarm
TPER1A
IRED
1.88
2.0
2.12
s
Standby (after one valid
smoke sample)
TPER2A
IRED
0.94
1.0
1.06
s
Standby (after two
consecutive valid smoke
samples)
TPER3A
IRED
0.94
1.0
1.06
s
Local alarm (after three
consecutive valid smoke
samples)
TPER4A
IRED
235
250
265
ms
Push button test,
>1 chamber detections
313
333
353
ms
Push button test,
no chamber detections
TPER5A
IRED
7.5
8.0
8.5
s
In remote alarm
Note 1: See timing diagram for Horn Pattern (Figure 5-2).
2: TPCLK and TIRON are 100% production tested. All other AC parameters are verified by functional testing.
3: Typical values are for design information only.
4: Limits over the specified temperature range are not production tested and are based on characterization
data.



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