TPS3305-33DGN

Supervisors Overview

The TPS3305-33DGN is a dual processor voltage supervisory circuit manufactured by Texas Instruments. It monitors two independent input voltages with fixed thresholds of 3.3 V and 5 V. The device features active high and active low push-pull outputs, a manual reset function, and an integrated watchdog timer. It operates within a supply voltage range up to 6 V and provides a reset delay time of 200 ms. The component is housed in an 8-pin MSOP-PowerPad package and supports surface mount installation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Dual-channel voltage supervision for monitoring multiple power rails simultaneously
• Integrated watchdog timer with manual reset capability for system reliability
• Configurable active high and active low push-pull output drivers

Supervisors Applications

• Dual processor system power management
• Embedded controller voltage monitoring
• Industrial control unit supervision

Supervisors Procurement Notes

Verify the specific suffix DGN confirms the MSOP-PowerPad-8 package variant. Confirm threshold settings match the 3.3 V and 5 V requirements. Ensure RoHS compliance status aligns with project specifications. Cross-reference the datasheet revision date to ensure current electrical characteristics are applied.

Supervisors Selection Notes

Select this component when dual independent voltage monitoring is required with configurable output polarities. The integrated watchdog and manual reset simplify design complexity compared to discrete solutions. Verify that the 6 V maximum supply voltage accommodates the highest monitored rail without exceeding limits.

Supervisors Part Context

This part belongs to the TPS3305 series of dual processor supervisors. It shares functional similarities with other variants in the family but differs in package type and specific threshold configurations. The DGN suffix specifically denotes the small outline micro-package with exposed pad for thermal performance.

Supervisors Replacement Considerations

Direct substitutes include TPS3305-33DR (SOIC-8 package) or TPS3305-18DGNR (different thresholds). Verify pin compatibility and threshold voltage alignment before substitution.