MAX6343ZUT

Overview

The MAX6343ZUT is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of +1V to +5.5V and features a fixed reset threshold voltage of 2.80V. The device provides an active-low, open-drain reset output with a typical reset delay time of 280ms. It is housed in a SOT-23-6 package and supports operation across a temperature range of -40°C to +125°C. The circuit consumes low quiescent current and lacks manual reset or watchdog timer functions.

Feature Summary

• Monitors power supply voltages to ensure system reliability through factory-trimmed threshold detection
• Provides active-low reset signal generation upon power-up or undervoltage conditions
• Operates efficiently at low supply voltages starting from 1V

Applications

• Digital system power supply monitoring
• Microprocessor reset circuits
• Low-voltage battery-powered devices

Procurement Notes

Verify component authenticity and datasheet revision when sourcing. Confirm package integrity and storage conditions prior to assembly. Check for end-of-life status or limited availability as distribution channels may vary. Ensure compatibility with existing design specifications regarding threshold voltage and operating temperature ranges before procurement.

Selection Notes

Select this component for applications requiring a fixed 2.80V reset threshold without manual reset inputs. Suitable for designs needing low quiescent current and wide operating temperature ranges up to 125°C. Consider the SOT-23-6 package size for space-constrained PCB layouts. Verify that the open-drain output configuration aligns with the target logic interface requirements.

Part Context

Part of the MAX6342–MAX6345 family of µP supervisory circuits designed to improve system reliability compared to discrete components. These devices offer factory-trimmed reset thresholds and operate with supply voltages between +1V and +5.5V. The family includes variants with different thresholds and features such as manual reset inputs or push-pull outputs.

FAQ

Does the MAX6343ZUT include a manual reset input?

No, the MAX6343ZUT does not have a manual reset input; it relies on automatic power-fail detection.

What is the reset output type of the MAX6343ZUT?

The reset output is active-low and open-drain.