ASM811TEUSF-T

Supervisors Overview

The ASM811TEUSF-T is a single-channel voltage supervisor IC from onsemi, housed in a 4-pin (3+Tab) SOT-143 package. It operates within a supply voltage range of 1.1V to 5.5V and features a fixed reset threshold of 3.08V. The device supports simple reset and power-on reset configurations with an active-low output. It includes a built-in power-fail detection function and guarantees an operating temperature range from -40°C to +105°C.

Supervisors Feature Summary

• Integrated power-fail detection capability for monitoring supply integrity
• Fixed 3.08V reset threshold ensures precise voltage supervision
• Active-low output signal compatible with standard logic interfaces

Supervisors Applications

• Portable electronic devices requiring low-voltage monitoring
• Embedded systems needing reliable power-on reset sequences
• Industrial control units operating in extended temperature environments

Supervisors Procurement Notes

Verify the complete part number including the suffix 'T' to confirm tape-and-reel packaging configuration. Ensure the specific revision matches design requirements. Confirm RoHS compliance status if environmental regulations apply. Cross-reference the SOT-143 pinout with the official datasheet before PCB layout finalization to prevent orientation errors during assembly.

Supervisors Selection Notes

Select this component when a fixed 3.08V threshold is required for system supervision. The wide input voltage range accommodates various battery and rail types. Consider the SOT-143 package size for space-constrained designs. Verify that the active-low output polarity aligns with the microcontroller or FPGA reset input requirements of the target application architecture.

Supervisors Part Context

This device belongs to onsemi's line of supervisory circuits designed for monitoring power rails. It provides essential protection against brown-out conditions and improper startup sequences. The integration of power-fail detection distinguishes it from basic reset generators, offering enhanced system reliability for critical digital logic applications.

Supervisors Replacement Considerations

Check for direct pin-compatible alternatives with identical 3.08V thresholds. Verify that substitute parts support the same 1.1V to 5.5V input range and SOT-143 footprint. Ensure equivalent thermal performance and output drive capabilities are maintained in any cross-reference selection.