18QHTF21-12.365487-OE

Overview

The 18QHTF21-12.365487-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 12.365487 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, typically supporting a supply voltage of 1.8V, though variants may support other levels. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component features an enable/disable control function and is rated for industrial temperature ranges, ensuring stability in demanding electronic environments.

Feature Summary

• Compact 4-SMD no-lead surface mount package
• LVCMOS output logic for digital interfacing
• Integrated enable/disable control functionality
• Standard clock oscillator design for precise timing

Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded microcontroller clock sources
• Consumer electronics timing circuits

Procurement Notes

Verify the specific supply voltage requirement (e.g., 1.8V vs 2.5V or 3.3V) as datasheets for this series may vary by suffix or revision. Confirm the exact load capacitance and frequency tolerance specifications required for your circuit design. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to your production line.

Selection Notes

Select this component when a small form factor is critical for space-constrained designs. The LVCMOS interface is suitable for direct connection to most modern digital logic families. Consider the operating temperature range requirements; ensure the selected variant meets the thermal conditions of the final application. Compare power consumption against similar oscillators if energy efficiency is a primary design constraint.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature crystal oscillators. The series offers various frequencies and voltage options within a standardized 2.0x1.6mm footprint. Mercury Electronics specializes in frequency control products, including crystals, TCXOs, and VCXOs, providing reliable timing solutions for global electronics manufacturing.

Replacement Considerations

Direct substitutes include other 12.365487 MHz LVCMOS oscillators in 4-SMD 2.0x1.6mm packages from manufacturers like Epson, NDK, or SiTime. Verify pinout compatibility and electrical parameters such as current consumption and startup time before substitution. Generic family replacements must match the enable/disable feature if utilized in the design.