HI1-0518-9

Overview

The HI1-0518-9 is a high-speed analog multiplexer manufactured by Harris Corporation, designed for harsh environment applications. It features a single 8-channel configuration utilizing monolithic CMOS technology with dielectric isolation to prevent latch-up. The device integrates an internal digital decoder and voltage reference for logic thresholding, enabling direct interface with TTL, CMOS, and DTL logic families without external pull-up resistors. It operates within a supply voltage range of ±10V and supports a transition time of up to 1.2µs. Qualified under MIL-STD-883 Class Q standards, it ensures reliability in extreme conditions ranging from -55°C to +125°C.

Feature Summary

• Dielectric isolation process eliminates latch-up and reduces substrate leakage
• Integrated digital decoder and internal voltage reference for logic compatibility
• MIL-STD-883 Class Q qualification for harsh environment reliability

Applications

• Military radar signal processing systems
• Avionics data acquisition modules
• Spacecraft telemetry control circuits

Part Context

The HI1-0518-9 belongs to the HI-508/HI-509 family of monolithic CMOS multiplexers produced by Harris Corporation. This series is characterized by its use of dielectric isolation (DI) technology, which distinguishes it from conventional junction-isolated CMOS devices by offering superior performance in radiation and high-temperature environments. The part is specifically engineered for defense and aerospace sectors requiring certified component reliability.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pinout and electrical compatibility if considering alternative sources, as specific cross-reference data is not documented.