HI1-0508-5

Overview

The HI1-0508-5 is a JAN version of the HI-508, a single 8-channel analog multiplexer. It utilizes Dielectric Isolation (DI) CMOS technology to eliminate latchup and reduce substrate leakage. The device integrates an array of eight analog switches, a digital decoder circuit for channel selection, and an internal voltage reference for logic thresholds. It features an enable input for device selection in multi-multiplexer systems. The switching threshold is established by an internal +5V reference, providing a guaranteed minimum of 2.4V for logic 1 and maximum of 0.8V for logic 0. This allows direct interface without pull-up resistors to signals from most logic families including CMOS, TTL, DTL, and some PMOS.

Feature Summary

• Dielectric Isolation process eliminates latchup and reduces parasitic capacitance
• Internal voltage reference enables direct logic interface without external pull-up resistors
• Integrated digital decoder circuit for channel selection
• Enable input supports device selection in multi-multiplexer configurations

Applications

• Harsh environment applications requiring MIL-STD-883 Class Q qualification
• Systems requiring direct interface with TTL, CMOS, or DTL logic families
• Multi-multiplexer systems requiring device selection via enable inputs

Procurement Notes

Verify the specific suffix indicates the JAN rating and -5 speed grade. Confirm the package type matches the required form factor. Check for MIL-STD-883 Class Q qualification status if harsh environment compliance is mandatory. Ensure the supply chain source provides traceability to the original manufacturer documentation.

Selection Notes

Select this component when a single 8-channel multiplexer with DI CMOS technology is required. Consider the internal logic reference for simplified interfacing. Evaluate the transition time and leakage specifications against system requirements. Verify compatibility with available logic families for direct connection.

Part Context

The HI1-0508-5 belongs to the HI-506/HI-507 and HI-508/HI-509 monolithic CMOS multiplexer family. These devices share common fabrication processes and functional architectures. The HI-508 variant specifically provides a single 8-channel configuration. The JAN designation indicates military-grade reliability standards.

Replacement Considerations

The HI-546/HI-547/HI-548/HI-549 series are recommended if input overvoltages are present in the application environment.