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MAX6323/MAX6324
P Supervisory Circuits with Windowed
(Min/Max) Watchdog and Manual Reset
2
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ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC = full range, TA = -40°C to +125°C, unless otherwise noted. Typical values are at VCC = 3V, TA = +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Terminal Voltage (with respect to GND)
VCC ..................................................................-0.3V to +6.0V
MR, RESET (MAX6323), WDI................-0.3V to (VCC + 0.3V)
WDPO, RESET (MAX6324) ..............................-0.3V to +6.0V
Input Current, VCC, WDI, MR ..............................................20mA
Output Current, RESET, WDPO ..........................................20mA
Rate of Rise, VCC ............................................................100V/s
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ..........696mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-Free ............................................................+260°C
Containing Lead.........................................................+240°C
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
4.25
4.38
4.50
4.63
4.75
Supply Current
ICC
27
57
A
Operating Voltage Range
1.2
5.5
VCC
V
VCC = 5.5V
VCC = 2.5V or 3.3V
23
45
A
1
V RESET = V WDPO = +5.5V, RESET, WDPO
deasserted
ILKG
WDPO, RESET Output Leakage
V
VCC - 1.5
ISOURCE = 800A, VCC = 4.75V, RESET
deasserted, (MAX632_ _UT44, MAX632_ _UT46)
VOH
RESET Output Voltage
(MAX6323)
0.8 x VCC
ISOURCE = 500A, VCC = 3.15V, RESET
deasserted (MAX632_ _UT23, MAX632_ _UT26,
MAX632_ _UT29, MAX632_ _UT31)
V
0.4
ISINK = 100A, VCC > 1.2V, RESET asserted
VOL
WDPO, RESET Output Voltage
0.4
ISINK = 3.2mA, VCC = 4.25V (MAX632_ _UT44,
MAX632_ _UT46)
0.4
ISINK = 1.2mA, VCC = 2.25V (MAX632_ _UT23,
MAX632_ _UT26, MAX632_ _UT29,
MAX632_ _UT31)
s
20
10mV/ms, VTH +100mV to VTH - 100mV
VCC to RESET Delay
ms
100
180
280
RESET deasserted
tRP
Reset Timeout Delay
V
2.25
2.32
2.38
CONDITIONS
MAX632_ _UT23
VTH
Reset Threshold Voltage
MAX632_ _UT44
MAX632_ _UT46
No load, RESET
deasserted
2.55
2.63
2.70
MAX632_ _UT26
2.85
2.93
3.00
MAX632_ _UT29
3.00
3.08
3.15
MAX632_ _UT31