DS1819AR-5-U

Supervisors Overview

The DS1819AR-5-U is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1 V to 5.5 V and monitors a single input channel. The device features active high and active low push-pull outputs with a reset delay time of 280 ms. It includes an integrated watchdog timer and manual reset capability. The component functions reliably across an operating temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer for system fault detection
• Manual reset pin for user-initiated system recovery
• Dual output configuration supporting active high and active low signals

Supervisors Applications

• Embedded system power supervision
• Microcontroller reset management
• Industrial control unit monitoring

Supervisors Procurement Notes

Verify the specific suffix 'U' against official datasheets to confirm tape-and-reel packaging status. Confirm RoHS compliance details as manufacturing sources may vary. Check current lifecycle status, as this part number may be discontinued or subject to limited availability constraints from authorized distributors.

Supervisors Selection Notes

Select this component when a supervisory circuit requires both voltage monitoring and watchdog functionality in a compact package. Ensure the required reset delay and threshold voltages align with the target microcontroller specifications. Verify that the SOT-23-5 footprint fits the available PCB space constraints.

Supervisors Part Context

This device belongs to the Maxim Integrated MicroMonitor family, designed for low-voltage applications. It combines power supply monitoring with processor reset generation and watchdog timing in a single small outline transistor package. The series targets cost-sensitive embedded designs requiring robust system reliability.

Supervisors Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic equivalents may lack the specific manual reset feature or exact reset delay characteristics. Validate pin compatibility before substitution.