MAX6340UK32+

Overview

The MAX6340UK32+ is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single voltage input with a threshold of 3.2 V and provides an active low, open-drain reset output. The device features a fixed reset delay time of 157 ms and operates within a supply voltage range up to 5.5 V. It functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in a compact SOT-23-5 surface-mount package and draws a typical operating current of 2.5 µA.

Feature Summary

• Monitors a single power supply rail for under-voltage conditions
• Provides a delayed active-low reset signal via open-drain output
• Operates over an extended industrial temperature range

Applications

• Microprocessor system reset generation
• Battery-powered equipment supervision
• Portable instrumentation power monitoring

Procurement Notes

Verify the specific suffix against official documentation to confirm the exact threshold voltage, as variations exist within the series. Confirm RoHS compliance status through manufacturer datasheets or authorized distributors. Ensure the SOT-23-5 footprint matches your PCB layout requirements before finalizing procurement decisions.

Selection Notes

Select this component when a single-channel voltage supervision with a precise 3.2 V threshold is required. Consider the 157 ms delay duration to ensure compatibility with target processor startup times. Verify that the open-drain output configuration aligns with the pull-up resistor requirements of the connected logic interface.

Part Context

This part belongs to the MAX6340 family of CMOS microprocessor supervisory circuits designed for reliable system management. These devices are engineered to monitor voltage levels and generate reset signals to protect sensitive digital components. The UK32 variant specifically targets applications requiring a 3.2 V detection level within the standard 5.5 V maximum supply envelope.

Replacement Considerations

Cross-reference with other MAX6340 variants such as MAX6340UK38+ for different threshold voltages. Verify pinout compatibility with SOT-23-5 packages from other manufacturers if sourcing alternatives.