HMC253LC4

RF Switches Overview

The HMC253LC4 is a GaAs MMIC SP8T non-reflective RF switch from Analog Devices, operating from DC to 3.5 GHz. It features a 24-pin TFCQFN (4x4 mm) package with an exposed pad. Key electrical parameters include a typical insertion loss of 1.3 dB and isolation of 35 dB at 3.5 GHz. The device supports a supply voltage range of 4.5 V to 5.5 V, drawing a typical operating current of 4.5 mA. It is designed for cellular and CATV applications, offering high linearity with an IIP3 of 43 dBm.

RF Switches Feature Summary

• Non-reflective SP8T topology ensures signal integrity across eight output ports
• Broadband operation covering DC to 3.5 GHz frequency range
• Compact 4 mm x 4 mm surface-mount ceramic package for space-constrained designs

RF Switches Applications

• Cellular infrastructure base stations
• CATV distribution networks
• WiMAX systems

RF Switches Procurement Notes

This component is obsolete and no longer manufactured by Analog Devices. Sourcing must rely on verified direct replacement parts such as the HMC253ALC4 or HMC253ALC4TR. Verify manufacturer documentation for pin compatibility and electrical equivalence before integration into new designs.

RF Switches Selection Notes

Select this part only for legacy system maintenance where original specifications are mandatory. For new designs, utilize the active HMC253ALC4 series which offers improved availability. Ensure thermal management accounts for the exposed pad in the 24-CQFN package during high-power operation.

RF Switches Part Context

Part of the HMC253 family of broadband RF switches. The LC4 suffix denotes the specific lead-free ceramic QFN package variant. This series provides non-reflective switching capabilities essential for minimizing VSWR in sensitive RF signal chains.

RF Switches Replacement Considerations

Direct substitutes include HMC253ALC4 and HMC253ALC4TR. These active replacements maintain functional compatibility while ensuring supply chain continuity.