DS1819AX-20+T&R

Supervisors Overview

The DS1819AX-20+T&R is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single supply voltage and provides reset signals with active high, active low, or push-pull outputs. The device features manual reset capability and an integrated watchdog timer. It operates within a supply voltage range up to 5.5 V and includes a reset delay time of 140 ms minimum. The component is housed in a SOT-23-5 package and supports operation temperatures from -40°C to +85°C.

Supervisors Feature Summary

• Monitors a single supply voltage for power integrity
• Provides configurable reset output states including active high, active low, and push-pull
• Integrates a manual reset input for system control
• Includes a built-in watchdog timer for fault detection

Supervisors Applications

• Microcontroller system power supervision
• Embedded systems requiring watchdog functionality
• Portable electronic devices with limited power budgets

Supervisors Procurement Notes

Verify the specific suffix AX against official datasheets to confirm threshold voltage and temperature grade compatibility. Confirm that the T&R designation matches the required reel packaging format for automated assembly processes. Ensure the source document explicitly lists this part number as available or discontinued to manage inventory planning accurately.

Supervisors Selection Notes

Select this component when a single-channel voltage supervisor with integrated watchdog timing is required. The SOT-23-5 package suits space-constrained designs. Verify that the 140 ms reset delay meets the target microcontroller startup requirements. Ensure the operating temperature range aligns with the environmental conditions of the final application.

Supervisors Part Context

This part belongs to the MicroMonitor series designed for simple, low-power voltage supervision. It serves as a dedicated reset generator for digital logic circuits. The series emphasizes minimal external component count while providing essential power management functions like reset assertion and watchdog monitoring.

Supervisors Replacement Considerations

Check for DS1819BR variants with matching threshold voltages. Verify pinout compatibility before substitution. Ensure the replacement part supports the same SOT-23-5 package and electrical specifications.