MAX809REXR+T

Supervisors Overview

The MAX809REXR+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors a single voltage input with a threshold of 2.63 V and an overvoltage threshold of 2.66 V. The device features an active-low, push-pull output and provides a reset delay time of 240 ms. It operates within a supply voltage range up to 5.5 V and consumes a typical operating current of 17 µA. Accuracy is specified at 1.5%. The component is housed in an SC-70-3 package and supports operation from -40°C to +125°C.

Supervisors Feature Summary

• Provides precise monitoring of a single power supply rail with high accuracy.
• Features an active-low push-pull output for direct interface with logic systems.
• Includes internal reset delay to ensure stable power-up conditions.
• Optimized for low-power consumption suitable for battery-operated applications.

Supervisors Applications

• Microprocessor and digital circuit power supervision
• Portable and battery-powered devices
• Controller systems requiring reliable power-on reset

Supervisors Procurement Notes

Verify the specific suffix 'R' indicates the 2.63 V threshold variant when sourcing. Confirm the '+T' designation corresponds to the reel packaging format required for automated assembly processes. Ensure compatibility with the SC-70-3 footprint during procurement planning.

Supervisors Selection Notes

Select this component for applications requiring a low-cost, single-channel supervisor with an active-low output. The 2.63 V threshold suits 3.3 V or 2.5 V systems. Consider the 17 µA quiescent current for energy efficiency. Verify that the push-pull output capability meets the drive requirements of the target logic family.

Supervisors Part Context

Part of the MAX809/MAX810 series of microprocessor supervisors. The MAX809 series offers low-power voltage monitoring in compact packages. This specific part integrates the supervisory function into a 3-pin form factor, eliminating external components for basic power monitoring tasks in embedded systems.

Supervisors Replacement Considerations

MAX809LEUR+T: Similar SOT-23-3 package but different threshold voltage (4.63 V). ADM809RAKS-REEL: Analog Devices equivalent with similar functionality but potentially different electrical characteristics and packaging options. Verify threshold voltages and output types before substitution.