18QHTF21-21.949218-OE

Oscillators Overview

The 18QHTF21-21.949218-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 21.949218 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable and disable functionality for power management
• Utilizes a surface-mount 4-SMD no lead package design

Oscillators Applications

• Digital clock signal generation
• Embedded system timing references
• Communication interface synchronization

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's power rails. Ensure the PCB footprint matches the 4-SMD no lead package dimensions to prevent assembly issues during manufacturing.

Oscillators Selection Notes

Select this component when a precise 21.949218 MHz clock source is required for low-voltage digital circuits. Consider the enable/disable feature if dynamic power saving is necessary. Evaluate the small form factor suitability for space-constrained designs compared to larger oscillator packages.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within the same physical footprint. The suffix OE indicates specific ordering or packaging variations defined by the manufacturer for this particular frequency variant.

Oscillators Replacement Considerations

Direct substitutes must match the 21.949218 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as phase noise and jitter specifications against the original datasheet to ensure functional equivalence in the application.