18QHTF21-22.557-PD

Oscillators Overview

The 18QHTF21-22.557-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 22.557 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode to reduce power consumption during inactive periods
• Utilizes a leadless SMD package for automated surface-mount assembly

Oscillators Applications

• Digital clock signal generation
• Microprocessor timing references
• Communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to prevent mounting issues.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. Consider the leadless package form factor if space constraints are critical. Verify that the operating temperature range meets your environmental specifications. Compare performance metrics such as phase noise and stability against alternative oscillators in the same series.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard XO oscillators from Mercury Electronics. The series offers various frequencies within a small footprint. The 'PD' suffix typically indicates specific packaging or handling characteristics defined by the manufacturer. This model provides a stable clock source for embedded systems requiring low power and high reliability.

Oscillators Replacement Considerations

Direct substitutes must match the 22.557 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and thermal characteristics. Consult the manufacturer's cross-reference list for approved alternatives.