18QHTF21-20.945-OE

Oscillators Overview

The 18QHTF21-20.945-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 20.945 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

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

Oscillators Applications

• Embedded systems requiring precise clock synchronization
• Consumer electronics with low-power design constraints
• Industrial control modules utilizing LVCMOS interfaces

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Cross-reference the manufacturer's latest datasheet for any updates on environmental compliance or reliability standards.

Oscillators Selection Notes

Select this component when a stable 20.945 MHz reference signal is required in space-constrained designs. The LVCMOS output ensures direct interfacing with standard digital logic without additional level shifting. The enable feature allows for dynamic power reduction during idle periods. Consider thermal performance and board layout sensitivity typical for SMD oscillators in high-density assemblies.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 1.8V LVCMOS format. The series is characterized by its small form factor and integrated control capabilities. Mercury Electronics leverages decades of quartz crystal manufacturing expertise to produce these timing solutions.

Oscillators Replacement Considerations

Direct replacements must match the 20.945 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as jitter and stability specifications against the original datasheet to ensure functional equivalence in the application.