TCM809TVNB713

Supervisors Overview

The TCM809TVNB713 is a single-channel voltage supervisor from Microchip Technology, designed to monitor system power rails in digital circuits. It operates within a supply voltage range of 1V to 5.5V and features an active-low push-pull reset output. The device guarantees a minimum reset timeout period of 140ms and ensures the reset output remains valid down to a supply voltage of 1.0V. It is housed in a compact SC-70 (SOT-323) surface-mount package and supports an extended industrial operating temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides precise monitoring of nominal system voltages including 3.0V, 3.3V, and 5.0V supplies without requiring external components.
• Features a push-pull reset output that maintains logic levels even at low supply voltages down to 1.0V.
• Includes guaranteed minimum reset timeout duration to prevent premature processor release during power-up sequences.

Supervisors Applications

• Microprocessor reset systems for embedded controllers
• Battery-powered equipment power management
• Critical microcontroller power supply monitoring

Supervisors Procurement Notes

Verify the specific threshold voltage variant required for the target application, as the TCM809 family offers multiple fixed options. Confirm the extended temperature grade (TVN suffix) matches environmental specifications. Ensure the SC-70 footprint aligns with the PCB layout design. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Supervisors Selection Notes

Select this component when a simple, cost-effective supervisor is needed for standard logic families. The push-pull output drives loads directly, eliminating the need for pull-up resistors. Choose this part over open-drain variants if stronger drive capability or faster switching is required. Verify that the 140ms timeout meets the startup requirements of the host processor.

Supervisors Part Context

This part belongs to the TCM809/TCM810 series of 3-pin microcontroller reset monitors. The TCM809 variant provides an active-low reset signal, whereas the TCM810 provides active-high. Both share similar electrical characteristics but differ in output polarity. The TVN suffix indicates the extended temperature range and SC-70 packaging configuration.

Supervisors Replacement Considerations

Direct substitutes include other TCM809 variants with different threshold voltages or packages, such as TCM809TENB713 (SOT-23-3). Check compatibility with MAX809 equivalents if pinout and electrical specs match. Ensure any replacement maintains the same reset polarity and timeout characteristics.