18QHTF21-13.558-OE

Overview

The 18QHTF21-13.558-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.558 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and includes an Enable/Disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates LVCMOS output interface for direct digital logic compatibility
• Features active enable/disable control pin for system power optimization
• Utilizes high-reliability quartz crystal technology for stable frequency generation

Applications

• High-speed data communication interfaces requiring precise clock synchronization
• Embedded systems utilizing low-voltage microprocessors and FPGAs
• Portable electronic devices constrained by strict size and power limitations

Procurement Notes

Verify the specific suffix 'OE' corresponds to the required enable/disable functionality and packaging variant. Confirm that the 1.8V supply requirement aligns with the target circuit design. Ensure the 4-SMD no-lead footprint matches the PCB layout specifications. Cross-reference the manufacturer's latest datasheet for any updates on RoHS compliance or material declarations prior to finalizing procurement orders.

Selection Notes

Select this component when a low-profile, 1.8V compatible oscillator is required for space-constrained designs. The LVCMOS output ensures compatibility with standard digital logic families without additional level shifting. Consider the enable/disable feature if dynamic power management is critical. Verify that the 13.558 MHz frequency meets the system timing requirements compared to more common standard frequencies.

Part Context

This part belongs to the HTF21 series of clock oscillators from Mercury Electronics, designed for general-purpose timing applications. The series offers various frequency options within a standardized 2.0x1.6 mm footprint. The '18QHTF21' prefix indicates the specific family characteristics, while the numeric suffix defines the operating frequency. This model represents a standard XO variant optimized for consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 13.558 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Check for equivalent enable/disable pin configurations. Verify dimensional tolerance compatibility with existing footprints. Ensure temperature stability and load capacitance specifications match the original design requirements.