18QHTF21-40.5504-OE

Oscillators Overview

The 18QHTF21-40.5504-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a nominal frequency of 40.5504 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable pin for power control
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Oscillators 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 PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly errors during manufacturing.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS signaling levels. The integrated enable function makes it suitable for battery-powered or power-sensitive designs. Consider the small form factor if board space is limited compared to larger oscillator packages.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co. Ltd, a manufacturer specializing in quartz crystals and oscillators. The series typically offers various frequency options within a standardized small outline package, providing consistent performance characteristics across different model variants.

Oscillators Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in 4-SMD packages with compatible frequencies. Verify pinout compatibility and electrical specifications such as current consumption and startup time when evaluating alternative sources.