MAX6311UK00D3

Supervisors Overview

The MAX6311UK00D3 is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It features two monitored inputs with factory-programmed reset thresholds of 3.3V and 5V. The device provides an active low, push-pull output and operates within a supply voltage range up to 5.5V. Key electrical parameters include a reset delay time of 1.4ms, an operating supply current of 8µA, and undervoltage/overvoltage thresholds of 2.463V and 2.538V respectively. It lacks manual reset, watchdog timers, and battery backup switching capabilities.

Supervisors Feature Summary

• Monitors multiple power supplies by asserting a system reset if any monitored supply falls outside the programmed threshold.
• Immune to short VCC transients on monitored supplies to prevent false resets.
• Guaranteed RESET valid down to VCC = 1V for reliable operation during power-down sequences.

Supervisors Applications

• Monitoring 5V and 3.3V supplies in personal computer systems
• Portable applications requiring low supply current
• Microprocessor (µP) supervisory circuits

Supervisors Procurement Notes

Verify the specific suffix 'D3' against the manufacturer's official datasheet to confirm the exact reset timeout period and threshold configuration. Ensure the package type matches the required PCB footprint. Confirm RoHS compliance status if required for your assembly process. Cross-reference the full part number with Analog Devices or Maxim Integrated documentation to avoid confusion with similar variants in the MAX6305–MAX6313 family.

Supervisors Selection Notes

Select this component when monitoring two distinct voltage rails is required. The fixed 3.3V and 5V thresholds suit standard logic and memory supplies. The low 8µA current consumption makes it suitable for battery-powered devices. The absence of a watchdog timer simplifies design if software-based supervision is preferred. Ensure the 1.4ms reset delay aligns with the target microprocessor's startup requirements.

Supervisors Part Context

This part belongs to the MAX6305–MAX6313 series of 5-pin, multiple-input, programmable reset ICs from Maxim Integrated (now Analog Devices). These CMOS supervisory circuits are specifically engineered for applications needing simultaneous monitoring of more than one power supply. The series offers various factory-set thresholds and timeout periods to accommodate different system architectures.

Supervisors Replacement Considerations

Other parts in the MAX6305–MAX6313 family may serve as substitutes if they match the required input count, threshold voltages, and output polarity. Verify that alternative components offer compatible reset delay times and supply current specifications. Check for pin-out compatibility in the SOT-23-5 package before substitution.