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MAX6369 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX6369
Description  Pin-Selectable Watchdog Timers
Download  10 Pages
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX6369 Datasheet(HTML) 4 Page - Maxim Integrated Products

 
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Pin-Selectable Watchdog Timers
4
_______________________________________________________________________________________
4
6
10
8
12
14
-40
10
-15
35
60
85
SUPPLY CURRENT
vs. TEMPERATURE
TEMPERATURE (
°C)
VCC = +5.5V
VCC = +2.5V
Typical Operating Characteristics
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
0.997
0.999
0.998
1.001
1.000
1.002
1.003
-40
10
-15
35
60
85
WATCHDOG TIMEOUT PERIOD
vs. TEMPERATURE
TEMPERATURE (°C)
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +2.5V to +5.5V, SET_ = VCC or GND, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C and
VCC = +3V.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VSET2 = 0V, VSET1 = 0V, VSET0 = 0V
3
9
ms
VSET2 = 0V, VSET1 = 0V, SET0 = VCC
39
VSET2 = 0V, SET1 = VCC, VSET0 = 0V
1
3
s
VSET2 = 0V, SET1 = VCC, SET0 = VCC
Watchdog Disabled
SET2 = VCC, VSET1 = 0V, VSET0 = 0V
30
90
µs
SET2 = VCC, VSET1 = 0V, SET0 = VCC
13
SET2 = VCC, SET1 = VCC, VSET0 = 0V
10
30
Watchdog Timeout
Period
tWD
SET2 = VCC, SET1 = VCC, SET0 = VCC
10
30
s
Watchdog Input Pulse Width
(Note 2)
tWDI
After WDO deasserted
100
ns
MAX6369/MAX6371/MAX6373
100
300
ms
Watchdog Output Pulse Width
tWDO
MAX6370/MAX6372/MAX6374
1
3
ms
Internal Setup Time
(Note 4)
tSETUP
After WDO deasserted
100
300
ms
Note 1: Production tested at TA = +25°C. Guaranteed by design over temperature limits.
Note 2: Guaranteed by design.
Note 3: In this setting the watchdog timer is inactive and startup delay ends when WDI sees its first level transition. See the
Selecting
Device Timing section for more information.
Note 4: After power-up, or a setting change, there is an internal setup time during which WDI is ignored.


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