DS1819CR-5-U

Supervisors Overview

The DS1819CR-5-U is a MicroMonitor voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1 V to 5.5 V and features a single monitored input with a threshold voltage of 2.925 V. The device provides push-pull outputs supporting both active high and active low configurations, along with manual reset capability and an integrated watchdog timer. It includes power-fail detection and offers a reset delay time of 140 ms minimum. The component functions reliably across an industrial temperature range from -40°C to +85°C and is housed in a compact SOT-23-5 surface-mount package.

Supervisors Feature Summary

• Integrates a watchdog timer for system reliability monitoring
• Supports configurable active high or active low output states
• Includes manual reset functionality for user-initiated control
• Provides power-fail detection capabilities

Supervisors Applications

• Embedded systems requiring voltage supervision
• Microcontroller-based designs needing watchdog protection
• Portable electronics utilizing low-voltage operation
• Industrial control circuits requiring manual reset options

Supervisors Procurement Notes

Verify the specific suffix 'U' indicates tape-and-reel packaging configuration as documented. Confirm RoHS compliance status through official manufacturer declarations prior to integration. Check current lifecycle status as this part may be discontinued or subject to limited availability constraints depending on regional distribution channels.

Supervisors Selection Notes

Select this component when a single-channel supervisor with configurable polarity and watchdog features is required. Ensure the 2.925 V threshold aligns with the target rail voltage. Verify that the SOT-23-5 footprint fits the PCB layout constraints. Consider the 140 ms reset delay against system startup timing requirements.

Supervisors Part Context

This device belongs to the DS1819 series of MicroMonitor voltage supervisors. It shares functional similarities with other parts in the family but differs in threshold voltage and output configuration options. The series is designed for cost-sensitive applications requiring robust power management in small form factors.

Supervisors Replacement Considerations

DS1819BR-10-U and DS1819AR-10+T&R are related variants within the same product family offering similar supervisory functions with different threshold accuracies and packaging options.