ULTRA-LOW-VOLTAGE SOT23 µP SUPERVISORY CIRCUITS HAVE MANUAL RESET AND WATCHDOG TIMER
SUNNYVALE, CA-March 13, 2001-Maxim Integrated Products introduces the MAX6821-MAX6825 microprocessor (µP) supervisory circuits that offer reset thresholds capable of monitoring system voltages from +1.8V to +5.0V. Whenever a supply voltage falls below the reset threshold, the reset output asserts and remains asserted for at least 140ms after the voltage exceeds the reset threshold. Nine factory-preset thresholds of +4.63V, +4.38V, +3.08V, +2.93V, +2.63V, +2.32V, +2.19V, +1.67V, and +1.58V are available.
Other features include a watchdog timer (MAX6821-MAX6824) that detects code execution error and a manual reset input (MAX6821/MAX6822/MAX6823/MAX6825) that allows for a reset without the power supply falling below the reset threshold.
These devices are available with three reset output options, which include an active-low, push-pull output (MAX6823/MAX6824/MAX6825), an active-high, push-pull output (MAX6821/MAX6824/MAX6825), and an active-low, open-drain output (MAX6822).
All devices are available in 5-pin SOT23 packages. Prices start at $1.15 (2500-up, FOB USA).
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