LTC695ISW-3.3#PBF

Supervisors Overview

The LTC695ISW-3.3#PBF is a supervisory circuit manufactured by Analog Devices Inc., designed for monitoring microprocessor power supplies. It operates within a supply voltage range of 2.9V to 5.5V and provides a fixed reset output threshold at 3.3V. The device features an open-drain or open-collector active-low reset signal, ensuring compatibility with various logic families. It includes a manual reset input for system control and supports external capacitor adjustment for programmable reset delay times. Packaged in a 16-pin SOIC (Wide) format, it functions reliably across industrial temperature ranges.

Supervisors Feature Summary

• Provides a stable 3.3V reset threshold for microprocessor supervision
• Features an open-drain reset output compatible with multiple logic standards
• Includes a manual reset input pin for direct system control
• Supports programmable reset delay via external timing capacitor

Supervisors Applications

• Microprocessor power supply monitoring
• Battery-powered system supervision
• Industrial control board reset circuits
• Communication equipment power management

Supervisors Procurement Notes

Verify the specific suffix ISW indicates the wide SOIC package variant when sourcing replacements. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the design accommodates the open-drain output requirements, including necessary pull-up resistor selection for the target logic voltage level. Cross-reference the datasheet revision date to confirm pinout consistency with existing PCB layouts.

Supervisors Selection Notes

Select this component when a fixed 3.3V supervision threshold is required for systems operating between 2.9V and 5.5V. The wide SOIC package facilitates easier prototyping and hand-soldering compared to smaller surface-mount options. Consider the manual reset feature if hardware-initiated system resets are part of the operational workflow. Evaluate the need for external delay capacitors against board space constraints and timing precision requirements.

Supervisors Part Context

This part belongs to the LTC695 series of supervisory circuits from Analog Devices, specifically tailored for low-voltage digital systems. The series offers various fixed thresholds and adjustable delay options to accommodate different processor architectures. The ISW designation distinguishes the physical footprint as a 16-pin wide SOIC, differing from standard narrow SOIC packages found in other variants within the same functional family.

Supervisors Replacement Considerations

Direct substitutes include other Analog Devices parts within the LTC695 family that share identical electrical specifications and pinouts. Verify package compatibility when considering alternatives from other manufacturers, as pin spacing differences may require adapter solutions. Ensure replacement components maintain the same 3.3V threshold accuracy and open-drain output configuration.