18QHTF21-109.380-OE

Overview

The 18QHTF21-109.380-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fundamental frequency of 109.38 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption during inactive periods. The component is housed in a compact 4-SMD surface-mount package, suitable for space-constrained circuit board layouts.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Operates on a 1.8V supply voltage rail
• Utilizes a 4-SMD surface-mount form factor

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references
• Consumer electronics mainboards

Procurement Notes

Verify the exact operating temperature range and load capacitance requirements against your specific circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power architecture. Ensure the 4-SMD footprint matches your PCB layout constraints. Cross-reference the part number suffix with official documentation to confirm the specific enable/disable pin configuration and tolerance specifications.

Selection Notes

Select this oscillator when a precise 109.38 MHz reference is required for LVCMOS-compatible digital circuits. Consider the 1.8V supply requirement if your system operates at lower voltages compared to traditional 3.3V or 5V standards. The enable/disable feature makes it suitable for battery-powered devices where power efficiency is critical. Evaluate the thermal performance and stability needs against the standard oscillator specifications provided in the datasheet.

Part Context

This component belongs to Mercury Electronics' standard XO series, which focuses on cost-effective frequency control solutions. The brand has extensive experience in quartz crystal manufacturing, providing reliable timing components for various industrial and consumer applications. This specific model represents a balance between performance and size, targeting modern electronic designs that require stable clock signals in small packages.

Replacement Considerations

Check for direct substitutes within the same Mercury product line that share identical frequency, voltage, and package dimensions. Verify compatibility with existing PCB footprints and electrical characteristics before swapping components. Consult official distributor databases for cross-references from other manufacturers offering equivalent LVCMOS oscillators at 109.38 MHz.