554HC000249DGR

Pin ConfigurableSelectable Oscillators Overview

The Skyworks Solutions Inc. 554HC000249DGR is a quad frequency low jitter voltage controlled oscillator (VCXO) from the Si554 series. It supports frequencies between 10 MHz and 1.4 GHz with a typical phase jitter of 0.5 ps. The device operates on a supply voltage ranging from 2.25 V to 2.75 V, typically 2.5 V. It features CML output format and an 8-SMD package measuring 7 mm x 5 mm x 1.8 mm. The load capacitance is 15 pF, and it functions within a temperature range of -40°C to +85°C.

Pin ConfigurableSelectable Oscillators Feature Summary

• Quad frequency VCXO architecture supporting multiple discrete frequencies within the 10 MHz to 1.4 GHz range.
• Low jitter performance with a typical phase jitter specification of 0.5 ps for high signal integrity.
• CML output interface designed for direct coupling to high-speed digital components.

Pin ConfigurableSelectable Oscillators Applications

• High-speed serial communication interfaces requiring precise clock generation.
• Data converter systems needing low phase noise clock sources.
• Telecommunications infrastructure equipment utilizing VCXO tuning capabilities.

Pin ConfigurableSelectable Oscillators Procurement Notes

Verify the specific operating frequency configuration against the datasheet, as the quad frequency designation implies selectable discrete outputs rather than continuous tuning across the entire band. Confirm that the 2.5 V supply voltage aligns with your system design, as this model differs from the 3.3 V variants in the same series. Ensure the CML output format matches your receiver input requirements before finalizing procurement.

Pin ConfigurableSelectable Oscillators Selection Notes

Select this component when low phase jitter is critical for system performance. The 554HC variant specifically targets lower voltage operation compared to other Si554 models. Consider the 8-SMD package dimensions for PCB layout constraints. Verify compatibility with the required discrete frequency points supported by the HC suffix configuration.

Pin ConfigurableSelectable Oscillators Part Context

The 554HC000249DGR belongs to the Si554 family of quad frequency VCXOs manufactured by Skyworks Solutions. This series provides flexible clocking solutions for applications demanding low jitter and precise frequency control. The HC suffix denotes specific electrical characteristics and frequency options distinct from other variants like the DD or MF series.

Pin ConfigurableSelectable Oscillators Replacement Considerations

The 554DD000129DG is listed as a parameter equivalent alternative. However, verify voltage compatibility, as the DD series typically operates at 3.3 V while the HC series operates at 2.5 V. Cross-reference pinout and output format specifications to ensure functional interchangeability.