DS1834DU+

Supervisors Overview

The DS1834DU+ is a dual voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors two independent power rails, specifically configured for 3.3V and 5V thresholds. The device features an active-low open-drain reset output with a fixed 350ms reset delay time to ensure stable power sequencing. It supports manual reset via a pushbutton input and includes power-fail detection capabilities. Operating within a supply voltage range up to 5.5V, the component maintains accuracy of 2.5% across an industrial temperature range from -40°C to +85°C. It is housed in an 8-pin uSOP package.

Supervisors Feature Summary

• Dual-channel voltage monitoring for simultaneous supervision of 3.3V and 5V power supplies
• Integrated manual reset functionality allowing user-initiated system resets via pushbutton
• Active-low open-drain reset output ensures compatibility with various logic families
• Power-fail detection capability provides early warning of voltage anomalies

Supervisors Applications

• Embedded systems requiring dual power rail supervision
• Industrial control units operating in harsh environments
• Consumer electronics with strict power sequencing requirements
• Communication equipment needing reliable voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix 'DU+' against official datasheets to confirm the uSOP-8 package variant. Confirm RoHS compliance status as indicated in current manufacturer documentation. Check for obsolescence notices or lifecycle changes directly from Analog Devices. Ensure the manual reset pin configuration matches your board design. Validate thermal performance specifications for your intended operating temperature range.

Supervisors Selection Notes

Select this component when dual voltage monitoring is required without watchdog timer complexity. The fixed 350ms delay suits applications tolerant of standard power-up sequences. Consider the uSOP-8 footprint constraints during PCB layout. Evaluate the 2.5% threshold accuracy against system tolerance requirements. Verify that the active-low output polarity aligns with downstream logic inputs.

Supervisors Part Context

The DS1834 series belongs to Maxim Integrated's EconoReset family, designed for cost-sensitive applications requiring basic voltage supervision. This specific part number represents the dual-input variant optimized for common 3.3V and 5V systems. It complements single-supply monitors like the DS1830 and more complex multi-supply controllers. The series emphasizes simplicity and low power consumption for general-purpose embedded designs.

Supervisors FAQ

Does the DS1834DU+ include a built-in watchdog timer?

No, the DS1834DU+ does not feature a watchdog timer; it provides only voltage monitoring and manual reset functions.

What is the reset delay time for the DS1834DU+?

The device has a fixed reset delay time of 350 milliseconds after the monitored voltage exceeds the threshold.