SC70, Single/Dual Low-Voltage,
Low-Power µP Reset Circuits
Pin Description
PIN
MAX6384/
MAX6381/
MAX6387/
MAX6382 MAX6386/ MAX6385
MAX6388
MAX6389
MAX6383
MAX6390
1
1
1
1
1
1
NAME
FUNCTION
MAX6381–MAX6390
GND
Ground
Active-High Push-Pull Reset Output. RESET
changes from low to high when any
monitored voltage (V
CC
or V
RESETIN
) drops
below the reset threshold or
MR
is pulled low.
RESET remains high for the reset timeout
period after monitored voltages exceed the
reset thresholds or
MR
is released.
Active-Low Open-Drain/Push-Pull Reset
Output.
RESET
changes from high to low when
any monitored voltage (V
CC
or V
RESETIN
)
drops below the reset threshold or
MR
is
pulled low.
RESET
remains low for the reset
timeout period after the monitored voltages
exceed the reset thresholds or
MR
is released.
Open-drain requires an external pullup
resistor.
Active-Low Manual Reset Input. Drive low to
force a reset. Reset remains active as long
as
MR
is low and for the reset timeout period
after
MR
is released. Leave unconnected or
connect to V
CC
if unused.
MR
has an internal
63kΩ (1.35kΩ for MAX6390) pullup resistor to
V
CC
.
Auxiliary Reset Input. High-impedance input
to the auxiliary reset comparator. Connect
RESET IN to the center point of an external
resistor voltage-divider network to set the
reset threshold voltage. Reset asserts when
either V
CC
or RESET IN falls below its
threshold voltage.
Supply Voltage for the device and input for
fixed V
CC
reset threshold monitor.
—
2
—
2
—
2
RESET
2
—
2
—
2
—
RESET
—
—
3
3
—
—
MR
—
—
—
—
3
3
RESET
IN
3
3
4
4
4
4
V
CC
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5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
