18QHTF21-108.069-OE

Overview

The 18QHTF21-108.069-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 108.069 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features enable/disable control functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

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

Applications

• Digital signal processing circuits requiring stable clock sources
• Communication equipment utilizing specific frequency standards
• Embedded systems operating on 1.8V power supplies

Procurement Notes

Verify the exact frequency tolerance and stability specifications against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout requirements. Check for any specific handling instructions related to the no-lead package type during assembly processes.

Selection Notes

Select this oscillator when a precise 108.069 MHz clock signal is required in space-constrained designs. The LVCMOS output ensures direct interfacing with standard logic families without additional buffering. The enable/disable feature allows for dynamic power management in battery-operated or energy-efficient devices. Consider the 1.8V operating voltage as a primary constraint for system architecture planning.

Part Context

This component belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized small outline package. These oscillators are engineered for high reliability and consistent performance across industrial temperature ranges. The manufacturer specializes in quartz-based frequency control solutions including TCXOs and VCXOs.

Replacement Considerations

Direct substitutes include other 108.069 MHz LVCMOS oscillators in 4-SMD packages with compatible 1.8V operation. Verify pinout compatibility and electrical parameters such as current consumption and load capacitance. Alternative part numbers may require schematic adjustments if output drive strength differs significantly.