18QHTF21-44.0055-PD

Oscillators Overview

The 18QHTF21-44.0055-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 44.0055 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The component features a power-down capability for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes power-down functionality to enable standby mode operation
• Designed as a standard XO for stable clock signal generation

Oscillators Applications

• Electronic circuits requiring stable clock signals
• Communication systems utilizing standard crystal oscillators
• Digital devices powered by 1.8V logic levels

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 4-SMD no-lead package footprint matches the PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to the final assembly process.

Oscillators Selection Notes

Select this component when a precise 44.0055 MHz clock source is required for low-voltage digital applications. The LVCMOS output ensures direct interfacing with compatible logic families without additional level shifting. The integrated power-down feature allows for energy management in battery-operated or power-sensitive designs. Consider the small form factor for space-constrained board layouts.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies with standardized LVCMOS outputs and 1.8V operation. The 'PD' suffix indicates the inclusion of a power-down pin or function. These components are designed for high-reliability applications in consumer electronics and industrial equipment.

Oscillators Replacement Considerations

Direct substitutes must match the 44.0055 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD 2.0x1.6mm package. Verify equivalent electrical characteristics such as phase noise and stability. Cross-reference with other manufacturers offering similar SMD oscillators with identical pinouts and functional specifications.