18QHTF21-104.325-OE

Overview

The 18QHTF21-104.325-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 104.325 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Standard XO configuration with LVCMOS output
• Integrated enable/disable functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose digital timing circuits
• Communication equipment clock generation
• Embedded system synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet to guarantee reliability under your environmental conditions.

Selection Notes

Select this component when a stable 104.325 MHz reference is required for LVCMOS-compatible logic interfaces. The 1.8V supply requirement makes it suitable for low-power portable or battery-operated devices. Consider the enable pin feature if power management during idle states is necessary. The small form factor supports high-density board designs where space is limited compared to larger through-hole or leaded packages.

Part Context

Mercury Electronics specializes in quartz crystals and oscillators, including TCXOs and VCXOs. This model belongs to their standard XO series, which provides basic frequency stability without temperature compensation. The part number suffix typically indicates specific packaging or testing configurations offered by the manufacturer for industrial and commercial electronics markets.

Replacement Considerations

Direct substitutes must match the 104.325 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package dimensions. Verify equivalent electrical parameters such as phase noise and jitter specifications. Cross-reference with other manufacturers offering similar SMD oscillators to ensure pinout compatibility and thermal performance meet the original design intent.