18QHTF21-22.579-PD

Oscillators Overview

The 18QHTF21-22.579-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 22.579 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a standby mode for power down capabilities. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes standby functionality to enable power-down states
• Utilizes a small form factor 4-SMD no-lead surface mount package

Oscillators Applications

• General timing clock generation in consumer electronics
• Synchronization signals in portable communication devices
• Clock sources for embedded systems requiring low power consumption

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 2.0x1.6mm SMD package dimensions. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure joint integrity.

Oscillators Selection Notes

Select this component when a precise 22.579 MHz reference is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage constraint and the need for power-down capability via the standby pin. Evaluate the space constraints against the 4-SMD package size. Compare performance metrics such as phase noise and stability if available in official documentation against alternative oscillators in the same series.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6mm package. The series is designed for applications requiring reliable quartz-based timing solutions. The 'PD' suffix indicates the inclusion of power-down functionality. Other variants in this series share identical physical and electrical characteristics except for their nominal output frequencies.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with different frequencies, such as 18QHTF21-21.500-PD or 18QHTF21-6.000-PD, provided the frequency difference is acceptable. Cross-brand replacements require matching LVCMOS logic, 1.8V supply, 22.579 MHz frequency, and 4-SMD package dimensions. Verify pinout compatibility and thermal characteristics before substitution.