MAX6357SWUT

Overview

The MAX6357SWUT is a triple-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.2V to 5.5V and features three active-low, push-pull reset outputs referenced to VCC1. The device monitors three distinct power-supply voltages with factory-set thresholds, including specific levels such as 1.67V and 2.93V. It provides a minimum 100ms power-on reset pulse width and includes a debounced manual-reset input. The component is available in a 6-pin SOT-23 package and functions across an extended temperature range of -40°C to +85°C.

Feature Summary

• Monitors multiple power-supply voltages with precision factory-set thresholds
• Provides active-low, push-pull reset outputs referenced to VCC1
• Includes a debounced TTL/CMOS-compatible manual-reset input

Applications

• Microprocessor system reliability enhancement
• Multi-voltage power supply monitoring
• Embedded system reset management

Procurement Notes

Verify the exact voltage threshold configuration required for your application, as the MAX6357 series offers various preset levels. Confirm that the 6-pin SOT-23 package aligns with your PCB footprint constraints. Ensure the operating temperature range meets your environmental specifications. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when simultaneous monitoring of three independent voltage rails is necessary. It is suitable for systems requiring precise reset timing and low quiescent current. Consider the specific threshold voltages needed for your logic levels. The integrated watchdog timer functionality may be relevant if supported by the specific suffix variant, though standard models focus on supervision and reset generation.

Part Context

This part belongs to the MAX6351–MAX6360 family of dual and triple-voltage microprocessor supervisors. These devices improve system accuracy compared to discrete components. The series is designed to assert all reset outputs if any monitored supply drops below its threshold. They are widely used in portable and industrial electronics where space and power efficiency are critical.

Replacement Considerations

Compatible substitutes include other parts from the MAX635x series, such as the MAX6356 or MAX6358, depending on whether dual or triple voltage monitoring is required. Verify that the replacement maintains the same output reference (VCC1) and package type.