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MAX6826 Datasheet(PDF) 6 Page - Maxim Integrated Products

Part No. MAX6826
Description  Dual Ultra-Low-Voltage SOT23 μP Supervisors with Manual Reset and Watchdog Timer
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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 6 page
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Dual Ultra-Low-Voltage SOT23 µP Supervisors
with Manual Reset and Watchdog Timer
6
_______________________________________________________________________________________
0
0.010
0.005
0.200
0.150
0.300
0.250
0.350
02
3
1
4567
VOLTAGE OUTPUT LOW vs. ISINK
ISINK (mA)
VCC = +2.9V
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
2.74
2.78
2.76
2.82
2.80
2.84
2.86
2.90
2.88
2.92
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
VOLTAGE OUTPUT HIGH vs. ISOURCE
ISOURCE (mA)
VCC = +2.9V
Pin Description
PIN NUMBER
MAX
6826
MAX
6827
MAX
6828
MAX
6829
MAX
6830
MAX
6831
PIN
NAME
FUNCTION
1
1
1
1
RESET
Active-Low Open-Drain or Push-Pull Reset Output. RESET changes from high
to low when VCC1, VCC2, or RESET IN input drops below the selected reset
threshold, MR is pulled low, or the watchdog triggers a reset. RESET remains
low for the reset timeout period after all voltages exceed the device reset
threshold, MR goes low to high, or the watchdog triggers a reset.
1
1
RESET
Active-High Push-Pull Reset Output. RESET changes from low to high when
VCC1, VCC2, or RESET IN input drops below the selected reset threshold, MR
is pulled low, or the watchdog triggers a reset. RESET remains HIGH for the
reset timeout period after all voltages exceed the device reset threshold, MR
goes low to high, or the watchdog triggers a reset.
2
2
2
2
2
2
GND
Ground
3
3
3
3
3
3
MR
Manual Reset Input, Active-Low, Internal 50k
Ω pullup to VCC. Pull low to force a
reset. Reset remains active as long as MR is low and for the reset timeout period
after MR goes high. Leave unconnected or connect to VCC, if unused.
4
4
4
4
4
4
WDI
Watchdog Input. If WDI remains high or low for longer than the watchdog timeout
period, the internal watchdog timer runs out and a reset is triggered for the reset
timeout period. The internal watchdog timer clears whenever reset is asserted, the
manual reset is asserted, or WDI sees a rising or falling edge. If WDI is left
unconnected or is connected to a three-stated buffer output, the watchdog feature
is disabled.




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