R574412885

Overview

The R574412885 is an SP8T terminated coaxial RF switch from the Ramses series by Radiall USA, Inc. It utilizes SMA connectors and supports frequencies up to 18 GHz. The device features a normally open configuration with integrated termination loads. Control is managed via 12Vdc BCD TTL inputs, utilizing diodes for logic interfacing. A D-sub connector provides the physical interface for control signals. This component is designed for high-performance radio frequency applications requiring precise signal routing.

Feature Summary

• SP8T switched topology with integrated terminated ports
• Normally open switching configuration
• 12Vdc BCD TTL control logic with diode interfacing
• D-sub connector for control signal input

Applications

• RF test and measurement equipment
• Telecommunications base stations
• Aerospace and defense radar systems
• Satellite communication ground stations

Procurement Notes

Verify the specific datasheet version for the R574412885 to confirm pinout compatibility with existing D-sub control harnesses. Ensure that the 12Vdc BCD TTL voltage levels match the driving circuitry specifications. Confirm that the SMA connector gender and mating requirements align with the system interconnect design. Check for any updated environmental compliance certifications required for the target deployment region.

Selection Notes

Select this model when an eight-channel RF switching solution with terminated outputs is required. The Ramses series offers high isolation and low insertion loss suitable for sensitive RF paths. The BCD TTL control interface simplifies integration with standard digital controllers. Consider the physical size of the D-sub connector in the overall system layout. Evaluate thermal management requirements if multiple switches are operated simultaneously in confined spaces.

Part Context

The R574412885 belongs to Radiall's Ramses family of coaxial switches, which are engineered for demanding RF environments. This series typically includes variants with different port counts (SP6T, SP7T, SP8T) and connector types. The terminated design ensures stable impedance matching across all states, reducing reflections. It complements other Radiall components like the R574412620 and R574412725, though those models may have different port configurations or status classifications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-compatibility with other Ramses series models such as R574412620 or R574412725 only if they share identical control logic and mechanical dimensions. Consult Radiall official documentation for direct replacements.