18QHTF21-109.98965-OE

Overview

The 18QHTF21-109.98965-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 109.98965 MHz and utilizes LVCMOS output logic levels. 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 technology applications.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates enable/disable functionality for power optimization
• Utilizes a leadless SMD package for automated assembly

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems with low-voltage logic constraints

Procurement Notes

Verify the specific frequency tolerance and stability requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your power architecture. 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 joint formation during assembly processes.

Selection Notes

Select this component when a standard frequency reference near 110 MHz is required with low voltage operation. Consider the enable pin requirement if dynamic power saving is necessary for the application. Evaluate the thermal performance within the -40°C to 85°C operating range. Compare against other series in the H21 family if different form factors or frequencies are needed for the same platform.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface mount crystal oscillators. The series is characterized by small footprints and low power consumption suitable for portable electronics. Mercury Electronics specializes in quartz-based frequency control products, including crystals, filters, and various oscillator types like TCXO and VCTCXO, serving global timing applications.

Replacement Considerations

Direct substitutes may include other 109.98965 MHz LVCMOS oscillators from Mercury Electronics with compatible pinouts. Verify equivalent electrical parameters such as supply voltage and output drive strength. Cross-reference with the manufacturer's official replacement guide for exact functional equivalents.