MAX6315US28D1+T

Supervisors Overview

The MAX6315US28D1+T is a low-power CMOS microprocessor supervisory circuit designed to monitor power supplies in microprocessor and digital systems. It features an active-low, open-drain RESET output with a manual reset input. The device operates within a supply voltage range of 1V to 5.5V and provides a fixed threshold voltage of 2.8V for the monitored supply. It includes a typical reset timeout period of 140ms and maintains accuracy within 1.8%. The component supports operation across an extended temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides reliable system reset by monitoring a single power supply rail against a fixed threshold.
• Features an open-drain output compatible with various logic families and allows manual assertion of the reset state.
• Designed for ultra-low power consumption suitable for battery-operated applications.

Supervisors Applications

• Microprocessor (µP) and digital system power supply supervision
• Battery-powered portable equipment requiring low quiescent current
• Embedded systems requiring manual reset capability

Supervisors Procurement Notes

Verify the specific suffix D1 indicates the factory-set threshold voltage during procurement. Confirm RoHS compliance status (+ suffix) and package type SOT-143-4 match design requirements. Ensure the operating voltage range covers the application's minimum supply levels. Check datasheet for exact reset delay specifications relevant to the target system timing constraints.

Supervisors Selection Notes

Select this component when a fixed 2.8V threshold is required for system supervision. Consider the open-drain output if level shifting or wired-OR configurations are needed. Evaluate the 1.8% accuracy against system tolerance requirements. Verify that the manual reset input aligns with user interface designs. Compare supply current specifications against other options in the MAX6315 family for optimal power efficiency.

Supervisors Part Context

This part belongs to the MAX6315 series of µP reset circuits manufactured by Analog Devices/Maxim Integrated. The series offers various fixed threshold voltages and packages. The US suffix denotes the SOT-143-4 package variant. The D1 suffix specifies the 2.8V threshold version. This family is designed to eliminate external components compared to discrete solutions.

Supervisors Replacement Considerations

Check for MAX6315US28D1-T for lead-free variations without the plus sign. Verify MIC6315 equivalents from Microchip for pin-compatible alternatives. Confirm availability of other threshold variants like MAX6315US29D1+T if 2.9V is acceptable.