CA139AM

Overview

The CA139AM is a quad voltage comparator manufactured by Harris Corporation, designed for industrial, commercial, and military applications. It integrates four independent high-speed comparators within a single package to facilitate efficient circuit design. The component operates with a wide supply voltage range and features low input bias current, ensuring accurate signal detection across various environmental conditions.

Feature Summary

• Integrates four independent high-speed comparators in a single monolithic package
• Designed for robust performance in industrial, commercial, and military environments
• Features low input bias current for precise signal comparison

Applications

• Industrial control systems requiring multi-channel signal monitoring
• Commercial electronic equipment needing compact comparator solutions
• Military-grade instrumentation demanding reliable voltage threshold detection

Procurement Notes

Verify the manufacturer origin as Harris Corporation or its successors, noting that original Harris semiconductor assets were acquired by Intersil and subsequently Renesas. Confirm the specific suffix 'AM' denotes the military temperature grade and ceramic package variant. Request full datasheets to validate pin compatibility and electrical specifications against current equivalent parts from Renesas or other authorized distributors.

Selection Notes

Select this component when a quad comparator configuration is required for space-constrained designs in harsh environments. Ensure the application benefits from the low input bias current characteristics. Compare against modern equivalents like the ICL8038 or similar quad comparators if legacy sourcing is challenging, verifying that pinouts and electrical limits match the system requirements.

Part Context

The CA139 series belongs to a class of analog integrated circuits widely used before the consolidation of semiconductor manufacturers. Harris Corporation was a prominent producer of such components before its acquisition by Intersil. This part represents a standard solution for multi-comparator needs in older industrial and military electronics designs.

Replacement Considerations

Direct replacements may include the ICL8038 or similar quad comparators from Renesas, which inherited Harris's product lines. Verify pin-for-pin compatibility and ensure the replacement meets the same military temperature and radiation hardness standards if applicable.