18QHTF21-66.666667-OE

Overview

The 18QHTF21-66.666667-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.666667 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Provides stable clock signals at 66.666667 MHz
• Supports low-voltage operation at 1.8V
• Includes enable/disable functionality for power control
• Utilizes LVCMOS output interface

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded system clock generation

Procurement Notes

Verify the exact part number including suffixes to ensure correct frequency and package configuration. Confirm that the enable/disable feature aligns with system power management requirements. Check datasheet specifications for operating temperature range and load capacitance to ensure compatibility with the target circuit design before ordering.

Selection Notes

Select this component when a precise 66.666667 MHz clock source is required for 1.8V logic interfaces. The enable/disable pin allows for dynamic power saving during idle periods. Ensure the PCB layout supports the 4-SMD no-lead footprint and that the application environment falls within the specified operational limits defined in the manufacturer's documentation.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor timing solutions. The series offers various frequencies and voltage options, catering to portable and space-constrained electronic designs. Mercury Electronics leverages its expertise in crystal manufacturing to provide reliable frequency control products.

Replacement Considerations

Direct substitutes must match the 66.666667 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as phase noise and stability before swapping components. Consult official cross-reference lists or manufacturer guidelines for approved alternatives.