MAX6357UVUT+T

Overview

The MAX6357UVUT+T is a triple-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors three independent supply rails with preset thresholds of 1.58V, 2.78V, and an adjustable voltage. The device features an active-low push-pull reset output referenced to VCC2. It includes a debounced manual reset input and operates within a supply voltage range up to 5.5V. The component is housed in a compact SOT-23-6 surface-mount package and supports operation across an extended temperature range from -40°C to +85°C.

Feature Summary

• Monitors three distinct power-supply voltages simultaneously for system reliability
• Provides an active-low push-pull reset output referenced to the secondary supply rail
• Includes a debounced manual reset input compatible with TTL/CMOS logic levels

Applications

• Multi-rail embedded systems requiring simultaneous voltage supervision
• Portable electronics utilizing multiple low-voltage power domains
• Industrial control units operating in extended temperature environments

Procurement Notes

Verify the specific threshold configuration during procurement, as the third input is adjustable while the first two are fixed at 1.58V and 2.78V. Confirm the package variant matches the SOT-23-6 footprint requirements. Ensure compatibility with the target system's VCC2 reference level for the reset output assertion. Check current availability status as distribution may vary by region.

Selection Notes

Select this component when triple-voltage monitoring is required in a minimal footprint. It is suitable for designs needing a push-pull output rather than open-drain configurations. Consider the adjustable threshold capability for the third rail if custom voltage tracking is necessary. Verify that the 5.5V maximum supply rating aligns with the highest monitored rail voltage.

Part Context

This part belongs to the MAX635x series of dual and triple-voltage supervisors designed to improve system accuracy compared to discrete components. These circuits assert reset outputs when any monitored supply drops below its threshold. The series offers various threshold combinations and output types to suit different microprocessor architectures.

Replacement Considerations

The MAX6358L series serves as a functional alternative but utilizes open-drain outputs instead of push-pull. The MAX6356 series offers similar triple-monitoring capabilities but may differ in output referencing and specific threshold values. Verify electrical compatibility before substitution.