18QHTF21-66.500-OE

Overview

The 18QHTF21-66.500-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.500 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable and disable functionality for power management
• Surface-mount 4-SMD no lead package design

Applications

• General clock signal generation
• Digital system timing references
• Embedded electronics modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS compatibility. The enable/disable feature supports dynamic power control strategies. Consider the small form factor of the 4-SMD package for space-constrained designs. Validate that the 66.500 MHz frequency meets the exact timing needs of the application without requiring external dividers or multipliers.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within the same package. The series provides standardized LVCMOS outputs with enable controls. It serves as a direct replacement for other oscillators requiring identical voltage levels and physical dimensions while maintaining specific frequency accuracy.

Replacement Considerations

Direct substitutes must match the 66.500 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical. Cross-reference with other manufacturers offering equivalent SMD oscillators with identical envelope dimensions.