18QHTF21-65.540-OE

Overview

The 18QHTF21-65.540-OE is a standard quartz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 65.54 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. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS compatible output logic for digital interface integration
• Integrated enable/disable pin for power management control
• Compact 4-pin surface-mount package design

Applications

• High-performance digital signal processing systems
• Communication equipment clock sources
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout specifications. Check for any specific operating temperature range limitations required by your application environment.

Selection Notes

Select this model when a precise 65.54 MHz reference is needed with low-power operation capabilities. Consider the LVCMOS output compatibility with your downstream logic family. Evaluate the physical size constraints of the 4-SMD package against available board space. Compare performance metrics such as phase noise and stability if high-frequency precision is critical for your design.

Part Context

This part belongs to the QuikXO series from Mercury Electronics, which focuses on fast-delivery CMOS output clock oscillators. The series includes both standard and custom frequency options. Mercury Electronic has a long history in manufacturing frequency control products, including crystals and oscillators, positioning it as a specialized supplier in the Taiwan electronics industry.

Replacement Considerations

Direct substitutes may include other models within the Mercury 18QHTF21 series with different frequencies but identical packaging and electrical characteristics. Cross-referencing with other manufacturers' 4-SMD LVCMOS oscillators requires careful verification of pinout compatibility and voltage levels.