18QHTF21-55.500-PD

Overview

The 18QHTF21-55.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 55.5 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package suitable for surface-mount assembly.

Feature Summary

• Supports low-voltage operation with integrated power-down capability
• Delivers LVCMOS output signals for digital interface compatibility
• Utilizes a leadless SMD package for space-efficient mounting

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded control units needing low-power oscillator solutions

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 PCB footprint matches the 4-SMD no lead package dimensions provided in the official datasheet to guarantee proper soldering and electrical connection.

Selection Notes

Select this component when a 55.5 MHz reference is required with LVCMOS outputs. Consider the 1.8V operating voltage and standby feature for power-sensitive designs. Compare package size constraints against other available oscillator series from the manufacturer to ensure mechanical fit within the target application enclosure.

Part Context

This model belongs to the Mercury Electronics XO (Standard) series. It shares the 4-SMD no lead form factor with other variants like the 51.2 MHz and 110.5 MHz models. The product line focuses on quartz-based frequency control solutions for consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 55.5 MHz LVCMOS oscillators in identical packages from Mercury Electronics. Verify pinout compatibility and electrical specifications before swapping with generic alternatives.