ICL7665CPA

Supervisors Overview

The ICL7665CPA is a microprocessor voltage monitor featuring dual overvoltage and undervoltage detection capabilities. It operates within a supply voltage range of 1.6V to 16V while monitoring input voltages from 1.3V up to several hundred volts via external resistors. The device draws a typical operating current of only 3µA, making it suitable for low-power applications. It includes on-board hysteresis and externally programmable trip points. The component is housed in an 8-pin DIP package and is designed for robust voltage supervision in systems requiring precise threshold monitoring.

Supervisors Feature Summary

• Dual comparator architecture with precision internal reference for independent over/undervoltage detection
• Externally programmable trip points and hysteresis via external resistors
• Monolithic low-power CMOS design ensuring minimal operating current consumption
• Active high or open drain output configurations for flexible interface compatibility

Supervisors Applications

• Microprocessor voltage monitoring and warning systems
• Low-battery detection circuits
• Power-fail and brownout detection mechanisms
• Battery backup switching logic
• Switching power-supply fault monitoring

Supervisors Procurement Notes

Verify the specific suffix 'CPA' against official Analog Devices documentation to confirm package type and temperature rating. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status, as legacy Maxim Integrated products may have limited stock or obsolescence notices. Confirm pinout compatibility with existing PCB layouts before procurement.

Supervisors Selection Notes

Select this component when dual-channel voltage supervision is required without complex external circuitry. The externally adjustable thresholds allow customization for various rail voltages above 1.3V. Consider the 3µA quiescent current for battery-operated designs. Verify that the required monitoring voltage range exceeds the minimum 1.3V threshold. Ensure the application does not require manual reset functionality, as this variant lacks that feature.

Supervisors Part Context

The ICL7665 series belongs to Maxim Integrated's family of micropower voltage monitors designed for system reliability. These devices provide essential protection for digital logic and microprocessors by detecting abnormal supply conditions. The CPA designation typically indicates a plastic DIP package suitable through-hole mounting. This series is widely used in industrial and consumer electronics where cost-effective voltage supervision is critical for preventing data corruption or hardware damage.

Supervisors Replacement Considerations

ICL7665ACSA+ and ICL7665CSA+ are listed as parameter-equivalent alternatives. Verify package compatibility (SOIC vs. DIP) and temperature range specifications when substituting. Ensure the replacement part meets the same electrical requirements for threshold accuracy and operating current.