DS1812-5+T&R

Supervisors Overview

The DS1812R-5+T&R is a single-channel voltage supervisor integrated circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand, belonging to the EconoReset series. It provides simple reset and power-on-reset functions with a push-pull/totem pole output that asserts high. The device monitors one supply voltage channel with a threshold of 4.62V and features a minimum reset timeout of 100ms. Designed for surface-mount installation, it is housed in an SOT-23-3 package (TO-236-3/SC-59) and operates within a temperature range of -40°C to 85°C.

Supervisors Feature Summary

• Provides active-high reset signal generation upon detection of undervoltage conditions or power-on events
• Features a fixed internal watchdog timer ensuring a minimum reset pulse duration of 100 milliseconds
• Utilizes a compact three-terminal SOT-23 surface-mount package for efficient board space utilization

Supervisors Applications

• Microcontroller system supervision
• Digital logic circuit protection
• Embedded system power management

Supervisors Procurement Notes

Verify the exact part number suffix against official manufacturer documentation, as variations such as +T&R indicate specific tape-and-reel packaging configurations. Confirm RoHS compliance status and ensure the selected variant matches the required operating temperature range and output drive characteristics for the target application environment.

Supervisors Selection Notes

Select this component when a cost-effective, single-supply voltage monitor is required for basic system integrity. Ensure the monitored rail voltage exceeds the 4.62V threshold reliably during normal operation. Consider the SOT-23-3 footprint constraints and verify that the 100ms minimum timeout aligns with the startup requirements of the downstream digital logic or processor.

Supervisors Part Context

This component belongs to the DS1812 family of supervisory circuits from Maxim Integrated, now part of Analog Devices. The series focuses on providing essential power monitoring capabilities in minimal form factors. The DS1812R-5 variant specifically targets applications requiring a fixed voltage threshold check with a guaranteed reset pulse width, distinguishing it from programmable or adjustable supervisor alternatives.

Supervisors FAQ

What is the output state of the reset pin during normal operation?

The reset output remains inactive (low) when the monitored voltage is above the threshold.

Does the DS1812R-5 support manual reset input?

No, this specific model provides automatic reset generation based on voltage monitoring and does not include a manual reset pin.