18QHTF21-54.400-PD

Oscillators Overview

The 18QHTF21-54.400-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 54.4 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Supports low-voltage operation with 1.8V supply requirement
• Integrates standby functionality for power management
• Provides LVCMOS output signal compatibility

Oscillators Applications

• Embedded systems requiring precise clock synchronization
• Portable electronic devices utilizing low-power components
• Communication modules needing stable frequency generation

Oscillators 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 no-lead package dimensions fit within your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Oscillators Selection Notes

Select this component when a 54.4 MHz clock source is required with low power consumption. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the 1.8V operating voltage if your system prioritizes energy efficiency. The integrated standby feature allows for dynamic power saving during idle periods, which is beneficial for battery-operated applications.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various frequencies and voltage options, all sharing similar package footprints and operational characteristics. Mercury Electronics has a long history in manufacturing crystal oscillators, providing reliable timing solutions for industrial and consumer electronics markets.

Oscillators Replacement Considerations

Direct substitutes include other 54.4 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as jitter and phase noise before swapping. Alternative models from the same manufacturer with different frequencies or voltages are not direct replacements.