HT1104 DC

Overview

The HT1104 DC is a quad analog switch manufactured by Honeywell Aerospace, designed for high-temperature environments. It features four single-pole single-throw (SPST) channels within a 14-pin ceramic dual in-line package (CDIP). The device operates on a single power supply ranging from 5V to 11V and maintains an on-resistance of up to 100 ohms. It supports a wide operating temperature range from -55°C to +225°C, ensuring reliability in severe conditions.

Feature Summary

• High-temperature oxide-isolated processing for reliable operation in severe thermal environments
• Quad channel configuration providing four independent SPST switching paths
• Robust ceramic packaging suitable for demanding industrial and aerospace applications

Applications

• High-temperature instrumentation systems
• Distributed control systems in harsh environments
• Avionics signal routing
• Industrial process control interfaces

Procurement Notes

Verify component authenticity through authorized distributors due to the specialized nature of high-temperature electronics. Confirm that the specific order suffix matches the required pinout and performance specifications. Check for any product change notices or obsolescence alerts associated with the HTMOS line before finalizing procurement plans.

Selection Notes

Select this component when standard silicon switches fail under extreme thermal stress. Ensure the system voltage remains within the 5V to 11V single-supply limit. Verify that the 100-ohm on-resistance meets the signal integrity requirements of the application. Consider the 14-CDIP package dimensions for PCB layout compatibility.

Part Context

Part of the HTMOS family, which utilizes oxide-isolated high-temperature processing. This technology enables continuous operation at 225°C with potential dynamic operation up to 300°C. The series targets markets requiring long-term reliability in oil field, turbine engine, and avionics sectors where conventional electronics are unsuitable.

Replacement Considerations

No verified public substitute part numbers are available. Evaluate other components within the HTMOS family for similar channel counts and package types if direct replacement is unavailable.