TS831-3IDT

Supervisors Overview

The TS831-3IDT is a single-channel voltage supervisor IC manufactured by STMicroelectronics, designed for simple reset and power-on reset applications. It features an open-drain or open-collector output that asserts a low-active reset signal when the monitored supply voltage drops below a precise threshold of 2.71V. The device incorporates internal hysteresis of 60mV to enhance noise immunity and prevent false triggering during voltage transitions. With a standard response time of 20µs for a 10mV overdrive, it ensures reliable system protection. The component operates within a temperature range of -40°C to 125°C and is available in an 8-SOIC surface-mount package.

Supervisors Feature Summary

• Integrates a high-stability band-gap voltage reference with a comparator featuring an open-drain output.
• Includes built-in hysteresis to increase noise margin and ensure stable operation under fluctuating conditions.
• Provides guaranteed reset functionality down to a supply voltage of 1V.

Supervisors Applications

• Microcontroller system supervision
• Power-on reset generation
• Battery-powered device monitoring

Supervisors Procurement Notes

Verify the specific suffix IDT corresponds to the 8-SOIC surface-mount package configuration. Confirm the -3 variant indicates the 2.71V threshold setting against other family members like TS831-4 or TS831-5. Ensure compliance with RoHS3 standards and check moisture sensitivity level requirements for storage and handling procedures prior to assembly.

Supervisors Selection Notes

Select this component when a fixed 2.71V threshold is required for single-supply monitoring. The open-drain output allows flexibility in interfacing with various logic families by selecting appropriate pull-up resistors. Consider the 20µs response time for timing-critical applications and verify that the 60mV hysteresis meets the noise environment requirements of the target circuit design.

Supervisors Part Context

This part belongs to the TS831 series of ultra-low-power supervisors from STMicroelectronics. The series shares pin-to-pin compatibility with legacy components such as the MC33064 and MC33164, facilitating direct replacements in existing designs. The TS831-3IDT specifically denotes the version with the 2.71V threshold and SOIC-8 packaging, distinguishing it from other threshold variants in the same product line.

Supervisors Replacement Considerations

Pin-compatible alternatives include the MC33064 and MC33164. Verify that substitute parts match the 2.71V threshold specification and open-drain output characteristics to maintain functional equivalence without requiring schematic modifications.