DS1834+

Supervisors Overview

The DS1834+ is a dual voltage supervisory circuit designed for systems with dual power supplies. It monitors two independent inputs, typically 5V and 3.3V, asserting active low open-drain reset signals when thresholds are exceeded. The device features a manual reset input and a fixed reset delay of 350 ms. Operating from a maximum supply voltage of 5.5 V, it draws 50 uA and functions within -40 C to +85 C.

Supervisors Feature Summary

• Monitors two distinct voltage rails simultaneously
• Includes dedicated manual reset control input
• Provides active low open-drain reset outputs

Supervisors Applications

• Systems requiring simultaneous monitoring of 5V and 3.3V rails
• Embedded controllers needing manual reset capability
• Industrial equipment operating in extended temperature ranges

Supervisors Procurement Notes

Verify the specific suffix (DS vs S) against the required package type, as the base model number spans multiple physical packages. Confirm RoHS compliance status for the exact revision. Check current availability as this component may be discontinued or restricted in certain regions.

Supervisors Selection Notes

Select this part when dual-rail supervision is required without watchdog functionality. Ensure the 350 ms delay meets system startup timing requirements. Verify that the open-drain output configuration aligns with the downstream logic interface needs.

Supervisors Part Context

Part of the MicroMonitor family focusing on cost-effective supervision. It simplifies design by integrating dual monitoring into a single compact package. The series targets applications where separate supervisors would increase board space and complexity.

Supervisors FAQ

Does the DS1834+ include a watchdog timer?

No, the DS1834+ does not include a watchdog timer; it provides only voltage monitoring and manual reset functions.

What is the reset delay time for this component?

The reset delay time is fixed at 350 ms after the voltage returns to the valid range.