MAX809SEUR+T

Supervisors Overview

The MAX809SEUR+T is a single-channel microprocessor voltage supervisor manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.2 V to 5.5 V and features a reset threshold voltage between 2.89 V and 2.96 V. The device provides a push-pull active-low reset output with a minimum power-on reset pulse width of 140 ms. It consumes 12 μA of supply current and is available in a 3-pin SOT-23 surface-mount package. The component supports an operating temperature range from -40°C to +105°C and complies with AEC-Q100 automotive standards.

Supervisors Feature Summary

• Provides precise monitoring for +2.5V, +5V, +3.3V, and +24V power rails
• Features a push-pull active-low reset output configuration
• Ensures reset validity across the entire VCC operating range
• Offers high immunity to power supply transients

Supervisors Applications

• Automotive systems
• Desktop computers, workstations, and servers
• Microprocessor and microcontroller power supervision
• Smart instrumentation
• Portable battery-powered devices

Supervisors Procurement Notes

Verify the specific reset threshold voltage tolerance against design requirements, as the MAX809 series offers multiple fixed thresholds. Confirm that the push-pull output type aligns with the target circuit's input impedance and drive capabilities. Ensure the SOT-23-3 footprint matches the PCB layout constraints. Validate that the 140ms minimum reset pulse width satisfies the system's power-on initialization timing specifications before finalizing procurement.

Supervisors Selection Notes

Select this component when a low-power, single-supervisor solution is required for voltages up to 5.5V. The push-pull output distinguishes it from open-drain alternatives like the MAX803. Consider the AEC-Q100 qualification if the application involves automotive environments. Compare the 12μA quiescent current against other supervisors to ensure optimal battery life for portable applications. Verify that the thermal performance in the SOT-23 package meets the junction temperature limits under maximum load conditions.

Supervisors Part Context

The MAX809SEUR+T belongs to the MAX809 family of microprocessor supervisory circuits. This series includes variants with different reset thresholds and output configurations, such as the open-drain MAX803 and the push-pull MAX810. The 'S' suffix typically denotes a specific reset threshold voltage within the standard range, while 'E' indicates the extended industrial temperature grade. The '+T' suffix signifies tape-and-reel packaging for automated assembly processes.

Supervisors Replacement Considerations

MAX809LEUR+T

Supervisors FAQ

What is the reset output configuration of the MAX809SEUR+T?

The MAX809SEUR+T features a push-pull active-low reset output.

Does the MAX809SEUR+T include a manual reset input?

No, the MAX809SEUR+T does not include a manual reset input; it relies on automatic power-on reset detection.