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Description as follow:

The MAX6749KA+T is a low-power microprocessor (μP) supervisory circuit, which monitors single/dual system supply voltages from 1.575V to 5V and provides maximum adjustability for reset and watchdog functions. The MAX6749KA+T device asserts a reset signal whenever the VCC supply voltage or RESET IN falls below its reset threshold or when manual reset is pulled low. The reset output remains asserted for the reset timeout period after VCC and RESET IN rise above the reset threshold. The reset function features immunity to power-supply transients. The applications of the MAX6749KA+T include Medical Equipment, Automotive, Intelligent Instruments, Portable Equipment, Battery-Powered, Computers/Controllers, Embedded Controllers, Critical µP Monitoring, Set-Top Boxes and Computers.

Parametrics

MAX6749KA+T absolute maximum ratings: (1)VCC to GND: -0.3V to +6.0V; (2)Input Current (All Pins): ±20mA; (3)Output Current (RESET): ±20mA; (4)Operating Temperature Range: -40℃ to +125℃; (5)Storage Temperature Range: -65℃ to +150℃; (6)Junction Temperature: +150℃; (7)Lead Temperature (soldering, 10s): +300℃.

Features

MAX6749KA+T features: (1)Factory-Set Reset Threshold Options from 1.575V to 5V in ~100mV Increments; (2)Adjustable Reset Threshold Options; (3)Single/Dual Voltage Monitoring; (4)Capacitor-Adjustable Reset Timeout; (5)Capacitor-Adjustable Watchdog Timeout; (6)Min/Max (Windowed) Watchdog Option; (7)Manual Reset Input Option; (8)Guaranteed RESET Valid for VCC ≥ 1V; (9)3.7μA Supply Current; (10)Push-Pull or Open-Drain RESET Output Options; (11)Power-Supply Transient Immunity; (12)Small 8-Pin SOT23 Packages.

Diagrams