18QHTF21-65.538-OE

Overview

The 18QHTF21-65.538-OE is a standard quartz crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a nominal frequency of 65.538 MHz and utilizes LVCMOS output logic. 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 output logic compatibility
• Integrated enable and disable control functionality
• Low voltage operation at 1.8V
• Compact surface-mount package design

Applications

• High-performance digital signal processing systems
• Communication equipment clock generation
• Embedded system timing references
• Consumer electronics main clocks

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout guidelines. Check for any specific reflow soldering profile recommendations provided in the manufacturer datasheet to ensure reliable assembly.

Selection Notes

Select this component when a precise 65.538 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage if your system uses low-voltage logic families. The enable/disable feature is beneficial for power-sensitive applications requiring dynamic clock management. Evaluate the physical dimensions of the 4-SMD package against available board space constraints.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic, which specializes in quartz-based frequency control products. The series includes various frequencies such as 8.640 MHz and 65.300 MHz, all sharing similar package and electrical characteristics. Mercury Electronic is a established supplier of crystals and oscillators, providing standardized components for industrial and consumer markets.

Replacement Considerations

Direct substitutes include other 65.538 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications before substitution. Cross-reference with Mercury Electronic part numbers like 18QHTF21-65.300-OE for similar form factors, though frequency differs.