MAX670 Maxim, MAX670 Datasheet - Page 6

• Manufacturer Part Number: MAX670
• Description: Low-Voltage / SOT23 P Supervisors with Power- Fail In/Out / Manual Reset / and Watchdog Timer
• Manufacturer: Maxim

The MAX6700 RESET output asserts low when any
monitored IN_ voltage drops below its specified reset
threshold and remains low for the propagation delay
(5µs) after all inputs exceed their thresholds (Figure 3).
The MAX6710 provides an extended reset timeout peri-
od of 140ms (min). The output is open drain with a
Low-Voltage, High-Accuracy, Triple/Quad
Voltage µP Supervisory Circuits in SOT Package
6
Figure 2. MAX6710 Functional Diagram
_______________________________________________________________________________________
ALL DEVICES ARE POWERED FROM IN2, V
(2.5V/1.8V)
(3.3V/3V)
IN2, V
(ADJ)
(ADJ)
Applications Information
IN1
IN3
IN4
CC
REFERENCE
0.62V
CC
(3.0V/3.3V). RESET IS VALID IF V
Reset Output
IN1
OR V
weak internal pullup to the monitored IN2 or V
(10µA typ). For many applications no external pullup
resistor is required to interface with other logic devices.
An external pullup resistor to any voltage from 0 to 5.5V
can overdrive the internal pullup if interfacing to differ-
ent logic-supply voltages (Figure 4). Internal circuitry
prevents reverse current flow from the external pullup
voltage to IN2.
IN2
IS GREATER THAN 1V, OR IF V
GATE
NOR
UVLO
(200ms)
TIME-
OUT
MAX6710
CC
IS GREATER THAN 2V (MAX6710Q ONLY)
IN2, V
CC
RESET
CC
supply