18QHTF21-66.673333-PD

Overview

The 18QHTF21-66.673333-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 66.673333 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down capability 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 functionality
• Provides LVCMOS output signal compatibility

Applications

• Digital clock distribution systems
• Data communication interfaces
• Embedded processor timing sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package dimensions fit the intended PCB footprint. Check for any specific handling instructions regarding electrostatic discharge sensitivity during assembly.

Selection Notes

Select this component when a precise 66.673333 MHz reference is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage constraint to ensure compatibility with low-power logic families. Evaluate the need for standby functionality if power management is critical. Verify that the small form factor meets space constraints in dense electronic assemblies.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a standardized 4-SMD package. The manufacturer specializes in quartz crystal products, providing timing solutions for consumer and industrial electronics. This specific model represents a fixed-frequency option within their broader oscillator portfolio.

Replacement Considerations

Direct substitutes must match the 66.673333 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Cross-reference with other manufacturers offering identical electrical specifications and pinout configurations to ensure functional interchangeability without redesigning the host circuit.