18QHTF21-66.148-OE

Overview

The 18QHTF21-66.148-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 66.148 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, supporting a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, no lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated enable and disable control functionality
• Compact 4-pin surface-mount package design

Applications

• General-purpose clock signal generation
• Digital system timing references
• Embedded controller 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 4-SMD no lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability during operation.

Selection Notes

Select this component when a precise 66.148 MHz clock source is required in space-constrained designs. Consider the 1.8V operating voltage as a primary constraint for power supply design. The enable pin offers flexibility for power management strategies. Evaluate thermal performance and stability requirements relative to the standard XO specifications provided by the manufacturer.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically includes various frequency options within the same physical package and electrical interface profile. The suffix OE indicates specific ordering or packaging configurations defined by the manufacturer. This model represents one specific frequency variant within that broader product family.

Replacement Considerations

Direct replacements must match the 66.148 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent pull stability and current consumption ratings. Cross-reference with other Mercury Electronics models in the 18QHTF21 series if available.