STM1817TWX7F

Supervisors Overview

The STM1817TWX7F is a low-power reset supervisor from STMicroelectronics designed to monitor power supplies for microcontrollers. It asserts a reset signal whenever the VCC supply voltage drops below a preset threshold and keeps it asserted until VCC rises above the threshold for a minimum recovery time. This device features an active-high, push-pull output and operates within a temperature range of -40°C to +105°C.

Supervisors Feature Summary

• Active-high push-pull output configuration
• Internal pull-up resistor absent; requires external connection
• Designed for portable equipment applications

Supervisors Applications

• Microcontroller power supply monitoring
• Portable electronic equipment
• +3.0V / +3.3V power supply systems

Supervisors Procurement Notes

Verify the specific suffix 'T' indicates the SOT-23-3 package and 'WX7F' denotes tape and reel packaging. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the active-high logic level matches the target circuit design requirements before procurement.

Supervisors Selection Notes

Select this component when an active-high reset signal is required. Unlike open-drain variants in the same family, this part provides a direct push-pull interface. Verify that the system voltage aligns with the available reset thresholds ranging from +2.55V to +4.62V for proper operation.

Supervisors Part Context

This part belongs to the STM181x series of low-power reset devices. The series includes variants with different output types (open-drain vs. push-pull) and polarities (active-low vs. active-high). All share similar core functionality regarding voltage monitoring and reset assertion timing.

Supervisors Replacement Considerations

Compatible substitutes include other STM181x variants with matching output characteristics. Specifically, check STM1812 which also features an active-high push-pull output. Ensure the replacement maintains the same package type and electrical specifications.