18QHTF21-66.666667-PD

Overview

The 18QHTF21-66.666667-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.666667 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode capability
• Utilizes LVCMOS output interface

Applications

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

Procurement Notes

Verify the exact frequency tolerance and operating temperature range against specific project requirements before ordering. Confirm that the 4-SMD no-lead package dimensions align with the PCB footprint design. Ensure the 1.8V supply voltage matches the target circuit's power rail capabilities to guarantee proper functionality and signal integrity.

Selection Notes

Select this component when a precise 66.666667 MHz reference is required in space-constrained designs. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency during idle periods is a critical design constraint for the application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has extensive experience in producing oscillators and crystals. This specific model represents a standard XO variant designed for reliable performance in various electronic systems.

Replacement Considerations

Direct substitutes may include other 66.666667 MHz LVCMOS oscillators in 4-SMD packages from different manufacturers. Verify pinout compatibility and electrical specifications such as current consumption and load capacitance before swapping components.