LTC694IN8-3.3#PBF

Supervisors Overview

The LTC694IN8-3.3#PBF is a microprocessor supervisory circuit manufactured by Analog Devices (formerly Linear Technology). It operates within an extended temperature range of -40°C to +85°C and is housed in an 8-pin plastic DIP package. The device provides a fixed reset threshold voltage of 3.3V for monitoring power supply lines. It features a single active-low reset output with a guaranteed minimum timeout period of 35ms to ensure stable system initialization.

Supervisors Feature Summary

• Provides precise power supply monitoring for microprocessor systems
• Generates active-low reset signal upon detecting out-of-tolerance conditions
• Includes internal watchdog timer functionality for system reliability

Supervisors Applications

• Microprocessor reset circuits
• Battery backup supervision
• CMOS RAM write protection
• Power failure warning systems

Supervisors Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing replacements. Confirm the package style matches the required PCB footprint, as other variants may exist in different form factors. Ensure the operating temperature range meets the environmental requirements of the target application before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when a fixed 3.3V threshold is required for digital logic supervision. Consider the PDIP-8 package constraints for through-hole assembly processes. Evaluate the need for integrated watchdog timing versus external implementation based on system complexity and pin availability requirements.

Supervisors Part Context

This part belongs to the LTC690 family of supervisory circuits, which includes models like the LTC690, LTC691, LTC694, and LTC695. These devices are designed to provide complete power management functions including reset generation and battery control. The family shares common architectural features but varies in threshold voltages and channel configurations.

Supervisors Replacement Considerations

Compatible substitutes include the LTC694IN8-3.3#TRPBF for tape-and-reel packaging or the LTC694IS8-3.3#PBF for SOIC surface-mount applications. Verify that alternative packages maintain identical electrical characteristics and pinout compatibility.