DS1831C

Supervisors Overview

The DS1831C is a multi-supply supervisory circuit from the MicroMonitor series, designed for systems with multiple power rails. It features four monitoring channels with open-drain or open-collector active-low reset outputs. The device monitors fixed thresholds of 2.5V and 3.3V, alongside two adjustable voltage inputs. It supports configurable reset timeouts of 10ms, 100ms, and 1,000ms minimums. Operating within a -40°C to +85°C temperature range, it utilizes a 16-pin PDIP package.

Supervisors Feature Summary

• Provides simultaneous supervision for up to four distinct power supply rails
• Includes dedicated internal comparators for fixed 2.5V and 3.3V threshold monitoring
• Features user-configurable reset delay times to accommodate specific system startup requirements
• Offers manual pushbutton reset input capability for system override functions

Supervisors Applications

• Multi-voltage embedded computing systems
• Industrial control units requiring redundant power monitoring
• Telecommunications infrastructure equipment
• Automotive electronic modules with mixed voltage domains

Supervisors Procurement Notes

Verify component authenticity carefully as this part is officially End-of-Life (EOL) per Product Change Notice dated January 15, 2016. Confirm RoHS compliance status, as standard versions are non-compliant. Ensure replacement sources provide valid traceability documentation due to discontinued manufacturing status.

Supervisors Selection Notes

Select this component when designing legacy systems requiring four-channel supervision with fixed 2.5V and 3.3V references. Verify that the 16-pin DIP package fits the target PCB layout constraints. Confirm that the open-drain output configuration aligns with the downstream logic interface requirements without additional pull-up components.

Supervisors Part Context

Part of the Maxim Integrated MicroMonitor family, the DS1831C addresses complex power sequencing needs in multi-rail environments. It integrates power-fail detection capabilities to warn of upstream supply failures. The device draws internal power from the highest active input rail, simplifying biasing in diverse operational states.

Supervisors Replacement Considerations

DS1831A

Supervisors FAQ

How is the internal power source determined for the DS1831C?

Internal power is drawn from the higher of either the IN 5V input or the IN 3.3V input.

What reset timeout options are available for this supervisor?

The device allows configuration of reset timeouts with minimum values of 10ms, 100ms, and 1,000ms.