18QHTF21-7.3428-OE

Overview

The 18QHTF21-7.3428-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 7.3428 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring 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 logic compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V

Applications

• General clock signal generation
• Digital system timing references
• Embedded controller circuits

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your design specifications before procurement. Ensure that the 1.8V supply rail is stable and within tolerance limits to maintain frequency accuracy. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to avoid assembly issues.

Selection Notes

Select this component when a precise 7.3428 MHz reference is required with minimal power usage. The 1.8V supply requirement makes it suitable for modern low-power digital designs. Consider the enable/disable feature if power management is critical. Compare performance metrics such as phase noise and stability against alternative oscillators in the same frequency range to ensure compatibility with sensitive timing applications.

Part Context

This part belongs to the QHTF series of quartz crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The '18' prefix indicates the 1.8V supply variant. These components are commonly used in consumer electronics and industrial equipment requiring reliable timing sources. The manufacturer specializes in frequency control products including crystals and filters.

Replacement Considerations

Check for direct substitutes with identical frequency, voltage, and package. Verify pinout compatibility for any cross-references. Ensure replacement parts meet the same LVCMOS output standards and enable/disable functionality requirements.