Datasheet

MAX823/MAX824/MAX825
5-Pin Microprocessor Supervisory Circuits With
Watchdog Timer and Manual Reset
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +4.75V to +5.5V for MAX82_L, V
CC
= +4.5V to +5.5V for MAX82_M, V
CC
= +3.15V to +3.6V for MAX82_T, V
CC
= +3V
to +3.6V for MAX82_S, V
CC
= +2.7V to +3.6V for MAX82_R, V
CC
= +2.38V to +2.75V for MAX82_Z, V
CC
= +2.25V to +2.75V for
MAX82_Y, T
A
= T
MIN
to T
MAX
, T
A
= -40°C to +85°C (SC70), T
A
= -40°C to +125°C (SOT23), unless otherwise noted. Typical values
are at T
A
= +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.
V
CC
........................................................................-0.3V to +6.0V
All Other Pins..............................................-0.3V to (V
CC
+ 0.3V)
Input Current, All Pins Except RESET and RESET..............20mA
Output Current, RESET, RESET ..........................................20mA
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)...............247mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
Operating Temperature Range
MAX82_EXK......................................................-40°C to +85°C
MAX82_EUK ...................................................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
MAX825T/S/R/Z/Y
PARAMETER SYMBOL MIN TYP MAX UNITS
4.56 4.63 4.70
Supply Current
(SOT23 Only)
I
SUPPLY
38
µA
4.5 12
10 24
4.50 4.75
Operating Voltage Range
MAX825L/M
MAX823L/M
MAX824L/M
1.0 5.5
V
CC
1.2
V
512
MAX823T/S/R/Z/Y
MAX824T/S/R/Z/Y
2.59 2.63 2.66
2.55 2.70T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX82_R
3.04 3.08 3.11
3.00 3.15T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX82_T
2.89 2.93 2.96
2.85 3.00T
A
= T
MIN
to T
MAX
T
A
= +25°C
CONDITIONS
MAX82_S
MR unconnected
T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX82_L
4.31 4.38 4.45
T
A
= 0°C to +70°C
T
A
= T
MIN
to T
MAX
4.25 4.50
WDI and MR
unconnected
T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX82_M
MAX825T/S/R/Z/Y
Supply Current
(SC70 Only)
I
SUPPLY
26
µA
38
617
MAX825L/M
MAX823L/M
MAX824L/M
412
MAX823T/S/R/Z/Y
MAX824T/S/R/Z/Y
MR unconnected
WDI and MR
unconnected
2.28 2.32 2.35
2.25 2.38
Reset Threshold
V
T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX82_Z
(SC70 only)
2.16 2.19 2.22
2.13 2.25T
A
= T
MIN
to T
MAX
T
A
= +25°C
MAX82_Y
(SC70 only)
V
RST