Press Release

DUAL/TRIPLE VOLTAGE µP SUPERVISORS MONITOR DOWN TO +0.62V

SUNNYVALE, CA-March 2, 2001-Maxim Integrated Products introduces the MAX6701–MAX6708 microprocessor (µP) supervisory circuits designed to monitor dual-voltage (MAX6704-MAX6708) and triple-voltage (MAX6701/MAX6702/MAX6703) systems. These devices monitor primary voltages from +2.5V to +5V and auxiliary voltages down to +0.62V.

Whenever V_CC or reset input (MAX6701/MAX6702/MAX6703) falls below its reset threshold, the reset output asserts and remains asserted for the minimum reset timeout period of 140ms after all inputs (V_CC and the reset input) rise above their reset threshold. Seven factory-set V_CC reset thresholds are available from +2.19V to +4.63V. Three reset output structures are available: an active-low push-pull (MAX6701/MAX6704/MAX6705/MAX6708), an active-high push-pull (MAX6702/MAX6704/MAX6706/MAX6708), and an active-low open-drain (MAX6703/MAX6707).

The MAX6701/MAX6702/MAX6703 feature two reset inputs that allow for a second and third voltage to be monitored down to 0.62V. The MAX6704-MAX6708 have a power-fail comparator with an active-low output that allows a secondary voltage to be monitored down to +0.62V. The comparator can also be used to monitor a battery voltage or warn the system of an impending power failure. The power failure comparator is available with either a push-pull (MAX6704/MAX6705/MAX6706/MAX6708) or open-drain (MAX6707) output.

Additional features include a manual reset input (MAX6701-MA6708), a watchdog timer input (MAX6701-MAX6707), and a watchdog output (MAX6701–MAX6703, MAX6705-MAX6707).

These devices are specified from -40°C to +85°C and are available in a space-saving 8-pin SOT23 package, which is 70% smaller than similar devices in an SO-8 package. Prices start at $1.38 (2500-up, FOB USA).