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BUY MAX691ACWE https://www.utsource.net/itm/p/543699.html
Microprocessor Supervisory Circuits The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip-enable propagation delay. Features include write protection of CMOS RAM or EEPROM, separate watchdog outputs, backup-battery switchover, and a RESET-bar output that is valid with VCC down to 1V. The MAX691A/MAX800L have a 4.65V typical reset-threshold voltage, and the MAX693A/MAX800M's reset threshold is 4.4V typ
Description: Low-Voltage, Low-Power, Reset Circuits with Watchdog and Manual Reset Features: Low Supply Current: 0.9μA Watchdog Timer: - Time-Out Period: 1.6ms to 8.3s - Selectable Time-Out Period Manual Reset Input Power-On Reset Output Active-Low Reset Output Push-Pull Output Reset Valid Down to 1V Reset Output Glitch-Free During Power-Up and Power-Down Available in 8-Pin SO and μMAX Packages Pb-Free Packages are Available Applications: Battery-Powered Systems Automotive Systems Portable Instruments Embedded Controllers Personal Computers Industrial Systems (For reference only)