MAX6351TWUT

Overview

The MAX6351TWUT+T is a dual-channel microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within an extended temperature range of -40°C to +85°C and utilizes a surface-mount SOT-23-6 package. The device features two active-low push-pull reset outputs, with one referenced to VCC1 and the other to VCC2. It provides precision factory-set thresholds for monitoring multiple power-supply voltages, including +1.8V, +2.5V, +3.0V, +3.3V, and +5V rails. Key electrical parameters include a minimum 100ms power-on reset pulse width and a debounced manual-reset input compatible with TTL/CMOS logic.

Feature Summary

• Dual-channel supervision with independent reset outputs referenced to separate supply rails
• Precision factory-set voltage thresholds for standard system power supplies
• Active-low push-pull output configuration ensuring robust drive capability
• Debounced manual-reset input for reliable user-initiated system control

Applications

• Multi-rail embedded system power management
• Microprocessor board voltage supervision
• Industrial control unit power integrity monitoring

Procurement Notes

Verify the specific suffix against official documentation to confirm pinout compatibility and threshold levels. Confirm RoHS3 compliance status for current production runs. Check manufacturer announcements for obsolescence notices or product change notifications affecting this specific variant. Ensure the ordering part number matches the required voltage thresholds and package type exactly.

Selection Notes

Select this component when simultaneous monitoring of two distinct supply rails is required with independent reset assertions. Verify that the available factory-set thresholds align with the target system voltages. Consider the push-pull output requirement versus open-drain alternatives based on downstream interface needs. Confirm thermal operating range suitability for the intended deployment environment.

Part Context

This device belongs to the MAX6351–MAX6360 series of microprocessor supervisors designed to improve system reliability. These circuits replace discrete components by integrating multiple voltage monitors into a single IC. The series offers various channel counts and timeout periods, with the MAX6351 specifically providing dual-channel supervision for critical dual-rail architectures.

FAQ

How are the reset outputs referenced in the MAX6351?

The MAX6351 provides two active-low reset outputs: one is referenced to VCC1 and the other is referenced to VCC2.

What is the minimum power-on reset pulse width?

The device guarantees a minimum power-on reset pulse width of 100ms.