MAX6353MSUK+T

Overview

The MAX6353MSUK+T is a dual-input voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors two independent power supply rails using fixed factory-set thresholds of 1.67 V and 2.78 V, with corresponding overvoltage limits at 1.7 V and 2.82 V. The device features an active-low push-pull reset output referenced to VCC1 and includes a debounced manual reset input. It operates within a supply voltage range up to 5.5 V, consumes 20 µA of quiescent current, and maintains a reset delay time of 180 ms. Accuracy is specified at 1.5%, and it functions reliably across an extended temperature range from -40°C to +85°C in a compact SOT-23-5 package.

Feature Summary

• Monitors multiple power supplies with precision factory-set thresholds
• Provides active-low push-pull reset outputs for system control
• Includes debounced manual reset input for user-initiated resets

Applications

• Portable electronic devices requiring low-power monitoring
• Personal computer systems monitoring 5V and 3.3V rails
• Battery-powered equipment needing reliable voltage supervision

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead times prior to ordering. Check for obsolescence notices as this series may have limited availability. Ensure packaging specifications match production requirements. Validate datasheet revisions against current design needs.

Selection Notes

Select this part when dual-voltage supervision is required without watchdog functionality. Compare threshold values against target supply rails to ensure proper reset assertion. Consider the 20 µA supply current for battery-sensitive designs. Verify that the SOT-23-5 package fits the PCB layout constraints. Confirm operating temperature range meets environmental specifications.

Part Context

This component belongs to the MAX6353L/U/W series of microprocessor supervisory circuits designed for multi-supervision applications. These devices improve system reliability by monitoring more than one power supply simultaneously. The series offers various threshold combinations and package options to suit different design requirements while maintaining low power consumption and small footprint characteristics.

Replacement Considerations

Compatible substitutes include MAX6353UVUK+T and MAX6353UWUK+T from the same family. Verify identical threshold voltages and pin configurations before substitution. Ensure replacement parts meet the same electrical and mechanical specifications.