S518025T-25.000-X-R

Oscillators Overview

The S518025T-25.000-X-R is a surface-mount HCMOS clock oscillator manufactured by Aker Technology Corp. It operates at a nominal frequency of 25 MHz with a standard load capacitance of 15 pF. The device supports an enable/disable function and features tri-state outputs. It functions within a supply voltage range of 1.8 V to 3.3 V, with typical operation at 1.8 V or 2.5 V. The unit utilizes a 4-pin SMD package with dimensions of 1.8mm x 1.2mm x 0.6mm. Frequency stability options include ±10ppm, ±20ppm, and ±30ppm across temperature ranges from -40°C to +85°C.

Oscillators Feature Summary

• HCMOS output interface compatible with standard logic families
• Integrated enable/disable control for power management
• Tri-state output capability for bus sharing applications
• Ultra-miniature surface mount packaging for space-constrained designs

Oscillators Applications

• High-speed data handling systems requiring precise timing
• Microprocessor-based application clock generation
• Telecommunications equipment synchronization
• Computer product internal timing signals

Oscillators Procurement Notes

Verify the specific frequency stability tolerance required for your design, as this part number family offers multiple accuracy grades such as ±10ppm, ±20ppm, or ±30ppm. Confirm the operating voltage matches your system's rail, typically 1.8V or 2.5V. Ensure the enable pin functionality aligns with your power sequencing requirements. Cross-reference the exact suffix codes to guarantee compatibility with your PCB footprint and thermal specifications.

Oscillators Selection Notes

Select this component when ultra-miniature size is critical alongside standard HCMOS compatibility. Consider the enable/disable feature if dynamic power saving is necessary during idle states. Evaluate the required frequency stability against environmental temperature variations. Verify that the 15pF load capacitance matches your circuit design without additional external components. Ensure the operating temperature range meets your application's harshness requirements.

Oscillators Part Context

This oscillator belongs to Aker Technology's line of ultra-miniature CMOS oscillators designed for wide temperature changes. It complements their broader portfolio of TCXOs, VCXOs, and automotive-grade crystals. The series targets applications demanding reliable timing in compact form factors, serving industries like telecommunications, data storage, and instrumentation where space and power efficiency are paramount constraints.

Oscillators Replacement Considerations

Direct substitutes may include other 25MHz HCMOS oscillators in similar 4-pin SMD packages from manufacturers like Epson, NDK, or SiTime. Verify pinout compatibility and electrical parameters such as rise/fall times and drive strength. Check for equivalent enable/disable functionality and frequency stability ratings. Ensure the replacement meets the same physical dimension constraints and operating voltage ranges.