18QHTF21-67.918367-OE

Overview

The 18QHTF21-67.918367-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 67.918367 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features an integrated enable/disable control pin for power management flexibility. The component is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained surface-mount designs.

Feature Summary

• Supports active high or low enable/disable functionality for power optimization
• Provides stable clock signals via LVCMOS output interface
• Utilizes a small-footprint SMD package for automated assembly

Applications

• Digital signal processing systems requiring precise timing references
• Communication equipment utilizing standard clock frequencies
• Embedded microcontroller boards needing low-voltage clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent soldering issues during assembly.

Selection Notes

Select this component when a specific 67.918367 MHz frequency is required rather than a standard integer value. Consider the 1.8V operating voltage as a primary constraint for compatibility with modern low-power logic families. Evaluate the enable pin utility if dynamic power saving is necessary for the target application.

Part Context

This part belongs to Mercury Electronics' line of standard XO oscillators, characterized by quartz-based stability. The '18QHTF21' prefix indicates the series and package type, while the numeric suffix defines the exact frequency. The '-OE' suffix typically denotes the enable feature configuration within their product catalog.

Replacement Considerations

Direct replacements must match the 67.918367 MHz frequency, 1.8V supply, and LVCMOS output. Verify that alternative packages maintain the same thermal and mechanical constraints. Cross-reference datasheets for jitter specifications to ensure signal integrity compliance.