LTC691CSW#TRPBF

Supervisors Overview

The LTC691CSW#TRPBF is a microprocessor supervisory circuit manufactured by Analog Devices Inc., housed in a 16-pin SOIC-W package. It monitors a single voltage input with a threshold of 4.65 V and features CMOS output. Key electrical parameters include a reset delay time of 50 ms, maximum supply voltage of 5.5 V, operating current of 600 uA, and accuracy of 2%. The device supports power failure detection and battery backup switching, operates within a temperature range of -40°C to +85°C, and dissipates up to 500 mW.

Supervisors Feature Summary

• Integrated watchdog timer functionality for system reliability
• Supports both active high and active low output configurations
• Includes chip enable signal control for power management
• Provides power failure detection and battery backup switching capabilities

Supervisors Applications

• Microprocessor system supervision
• Watchdog timer implementation
• Power failure detection circuits
• Battery backup switching applications

Supervisors Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the specific suffix matches the required package and temperature grade. Request official datasheets and test reports to ensure compliance with RoHS standards. Validate that the lot date code aligns with project requirements. Check for any product change notifications affecting pinout or electrical characteristics before finalizing procurement.

Supervisors Selection Notes

Select this component when a single-channel supervisor with integrated watchdog is required. Ensure the 4.65 V threshold matches the monitored rail voltage. Verify that the 16-pin SOIC-W package fits the PCB layout constraints. Consider the 600 uA operating current for low-power designs. Confirm compatibility with the system's logic levels given the CMOS output type. Evaluate the 50 ms reset delay against the processor startup time requirements.

Supervisors Part Context

The LTC691 belongs to Analog Devices' Supervisor Circuits family, specifically designed for monitoring voltage levels in digital systems. This series integrates watchdog timers and power-fail detection into a compact package. The CSW variant denotes the commercial temperature range and surface-mount packaging. It serves as a critical component for ensuring system stability and recovery from fault conditions in embedded applications.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices application notes for potential cross-references. Verify pin-to-pin compatibility and electrical parameter equivalence if considering alternative manufacturers. Review datasheet differences regarding reset timing and output drive strength before substitution.