Low-Voltage, High-Accuracy, Quad-Voltage
µP Supervisory Circuit in SOT Package
MAX6710
IN1
IN2
IN3
R1
IN4
(ADJUSTABLE
INPUT)
R2
GND
MAX6710
RESET
always be used for normal operation (device power-
supply pin). Unused monitor inputs cannot be connect-
ed to ground or allowed to float.
Adding Manual Reset Capability
Figure 5 shows an application circuit adding manual
reset to the MAX6710 quad-voltage supervisor.
Depressing the pushbutton switch short-circuits the ana-
log input to ground and initiates a
RESET
pulse. The
switch must be open for 200ms (typ) in order to deassert
the
RESET
output. No external switch debounce is
required. Use a small capacitor to improve noise immuni-
ty when using long leads from the pushbutton switch to
the adjustable input.
Figure 5. Adding Manual Reset Capability
Power-Supply Bypassing and Grounding
The MAX6710 is normally powered from the monitored
IN2 or from the V
CC
supply input. All monitored inputs
are immune to short supply transients. If higher immuni-
ty is desired in noisy applications, connect a 0.1µF
bypass capacitor from the IN2 input to ground.
Additionally, capacitance can be added to IN1, IN3,
and IN4 to increase their noise immunity.
Because the MAX6710 has a guaranteed input current
of ±0.2µA (±0.4µA for IN1) on its adjustable inputs,
resistor values up to 100kΩ can be used for R2 with
<1% error. The MAX6710Q includes an internal voltage
clamp (1.5V typ) at each of the adjustable voltage
inputs. An input voltage higher than 1.5V induces a
higher input current.
Unused Inputs
Connect unused monitor inputs to a supply voltage
greater in magnitude than their specified threshold volt-
ages. For unused IN_ adjustable inputs, connect a
1MΩ series resistor between the unused input and IN2
(or V
CC
) to limit the bias current. The IN2 input must
TRANSISTOR COUNT: 699
PROCESS: BiCMOS
Chip Information
Pin Configuration
TOP VIEW
IN1
1
6
RESET
(V
CC
) IN2
2
MAX6710
5
GND
IN3
3
4
IN4
SOT23
( ) ARE FOR MAX6710Q ONLY
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
