概述

max705cpa 低成本微处理器监控电路

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 supply 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-bar.

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. all four parts are available in 8-pin dip, so and µmax® packages.

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