FUNCTION
1—IN1 Input Voltage 1. See Selector Guide for monitored voltages.
2—IN2 Input Voltage 2. See Selector Guide for monitored voltages.
3—IN3 Input Voltage 3. See Selector Guide for monitored voltages.
4—IN4 Input Voltage 4. See Selector Guide for monitored voltages.
55GND Ground
6—
Output 1. PWRGD1 asserts low when IN1 falls below its threshold voltage. PWRGD1 is open
drain with a 10µA internal pullup current source to V
CC
.
10 10 V
CC
Power-Supply Input. Connect V
CC
to a 2.0V to 5.5V supply. An undervoltage lockout circuit
forces all PWRGD_ outputs low when V
CC
drops below the minimum operating voltage. V
CC
is not a monitored voltage for the MAX6709. For the MAX6714, RESET asserts low when V
CC
drops below its threshold.
—1MR
Manual Reset Input. Force MR low to assert the RESET output. RESET remains asserted for
the reset timeout period after MR goes high. MR is internally pulled up to V
CC
.
—2PFI1
Power-Fail Input 1. Input to noninverting input of the power-fail comparator. PFI1 is
compared to an internal 0.62V reference. Use an external resistor-divider network to adjust
the monitor threshold.
—3PFI2
Power-Fail Input 2. Input to noninverting input of the power-fail comparator. PFI2 is
compared to an internal 0.62V reference. Use an external resistor-divider network to adjust
the monitor threshold.
—4PFI3
Power-Fail Input 3. Input to noninverting input of the power-fail comparator. PFI3 is
compared to an internal 0.62V reference. Use an external resistor-divider network to adjust
the monitor threshold.
—6PFO3
Power-Fail Output 3. PFO3 is an active-low, open-drain output with a 10µA internal pullup to
V
CC
. PFO3 asserts low when PFI3 is below the selected threshold.
—7PFO2
Power-Fail Output 2. PFO2 is an active-low, open-drain output with a 10µA internal pullup to
V
CC
. PFO2 asserts low when PFI2 is below the selected threshold.
—8PFO1
Power-Fail Output 1. PFO1 is an active-low, open-drain output with a 10µA internal pullup to
V
CC
. PFO1 asserts low when PFI1 is below the selected threshold.
—9
Reset Output. RESET is an active-low, open-drain output that asserts low when V
CC
drops
below its preset threshold voltage or when a manual reset is initiated. RESET remains low for
the reset timeout period after V
CC
exceeds the selected reset threshold or MR is released.
