MAX6351SVUT+T

Overview

The MAX6351SVUT+T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.2V to 5.5V and monitors two independent input voltages. The device features low-level active push-pull reset outputs referenced to VCC1 and VCC2, respectively. Key electrical parameters include a maximum operating voltage of 5.5V, a typical quiescent current of 20µA, and a reset timeout delay of 180ms. The component is housed in a compact SOT-23-6 surface-mount package and supports an extended industrial temperature range from -40°C to +85°C.

Feature Summary

• Monitors two independent power supply rails with factory-set threshold levels
• Provides low-level active push-pull reset outputs for reliable logic interfacing
• Includes a debounced manual reset input compatible with TTL and CMOS standards

Applications

• Embedded systems requiring simultaneous monitoring of multiple voltage domains
• Portable electronic devices utilizing battery-powered architectures
• Industrial control units needing robust power-fail detection

Procurement Notes

Verify the specific suffix 'SV' against the official datasheet to confirm the exact voltage thresholds for VCC1 and VCC2, as these vary across the MAX6351 family. Ensure the ordering part number matches the required pinout and output configuration. Confirm RoHS compliance status through the manufacturer's certification documents before finalizing procurement.

Selection Notes

Select this component when a system requires monitoring exactly two voltage rails with distinct threshold requirements. The push-pull output architecture eliminates the need for external pull-up resistors, simplifying board layout. Consider the 20µA quiescent current for battery-operated applications where power efficiency is critical. Verify that the 180ms reset timeout meets the startup timing requirements of the connected microprocessor.

Part Context

This part belongs to the MAX635x series of dual and triple voltage microprocessor supervisors. These devices integrate multiple functions typically requiring discrete components into a single small footprint. The series is designed to enhance system reliability by detecting power failures and initiating controlled resets. The MAX6351 variant specifically focuses on dual-channel supervision without a watchdog timer feature found in other members like the MAX6358.

FAQ

Does the MAX6351SVUT+T include a watchdog timer?

No, the MAX6351 does not include a watchdog timer. This feature is available in related parts such as the MAX6358, MAX6359, and MAX6360.

What is the reset output type for the MAX6351?

The MAX6351 provides low-level active push-pull reset outputs for both monitored channels, allowing direct connection to processor reset pins without external pull-ups.