18QHTF21-66.532547-PD

Overview

The 18QHTF21-66.532547-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 66.532547 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down capability. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Features LVCMOS output logic compatibility
• Includes standby and power-down functionality

Applications

• General digital clock generation
• Embedded system timing references
• Communication interface synchronization

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 package dimensions fit within your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Selection Notes

Select this component when a precise 66.532547 MHz clock signal is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage as a primary constraint for power budgeting. The integrated standby feature offers energy efficiency benefits for portable or battery-operated devices. Evaluate the small form factor suitability for high-density board designs.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal products. The series typically offers various frequencies and packaging options. Mercury Electronics has a long history in the Taiwan quartz industry, providing standardized oscillators for diverse electronic applications.

Replacement Considerations

Direct substitutes may include other models from the same 18QHTF21 series with identical pinout and voltage specifications but different frequencies. Cross-referencing with other manufacturers' 4-SMD LVCMOS oscillators requires careful verification of electrical parameters and mechanical dimensions.