<strong>MAX706ESA+T General Description
The MAX705-MAX708/MAX813L microprocessor (µP)supervisory circuits reduce the complexity and numberof components required to monitor power-supply andbattery functions in µP systems. These devices signifi-cantly improve system reliability and accuracy com-pared to separate ICs or discrete components.
The MAX705/MAX706/MAX813L provide four functions:
1) A reset output during power-up, power-down, and brownout conditions.
2) An independent watchdog output that goes low if the watchdog input has not been toggled within 1.6 seconds.
3) A 1.25V threshold detector for power-fail warning, low-battery detection, or for monitoring a power sup-ply other than +5V.
4) An active-low manual-reset input.
The MAX707/MAX708 are the same as the MAX705/MAX706, except an active-high reset is substituted for the watchdog timer. The MAX813L is the same as the MAX705, except RESET is provided instead of RESET.Two supply-voltage monitor levels are available: The MAX705/MAX707/MAX813L generate a reset pulse when the supply voltage drops below 4.65V, while the MAX706/MAX708 generate a reset pulse below 4.40V。
MAX706ESA+T Features
µMAX Package: Smallest 8-Pin SO
Guaranteed RESET Valid at VCC = 1V
Precision Supply-Voltage Monitor
4.65V in MAX705/MAX707/MAX813L
4.40V in MAX706/MAX708
200ms Reset Pulse Width
Debounced TTL/CMOS-Compatible Manual-Reset Input
Independent Watchdog Timer—1.6sec Timeout(MAX705/MAX706)
Active-High Reset Output(MAX707/MAX708/MAX813L)
Voltage Monitor for Power-Fail or Low-Battery Warning
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