18QHTF21-108.108-PD

Overview

The 18QHTF21-108.108-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 108.108 MHz and utilizes LVCMOS output logic. The component requires a 1.8V supply voltage and features a Standby (Power Down) control function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby (Power Down) functionality to reduce power consumption
• Designed for surface-mount assembly using a leadless SMD package

Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded systems needing low-voltage oscillator solutions

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 2.0x1.6mm footprint matches your PCB layout constraints. Check for any specific handling instructions related to the leadless SMD package during assembly.

Selection Notes

Select this component when a 108.108 MHz reference is required with LVCMOS outputs. Consider the 1.8V supply constraint and the need for power-down capabilities. Evaluate the small 2.0x1.6mm package size against available board space. Compare stability and phase noise specifications if available in official documentation to ensure suitability for the target application.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The 'PD' suffix indicates the inclusion of a Power Down pin or function. This specific model provides a high-frequency option within the standard XO category.

Replacement Considerations

Direct substitutes must match the 108.108 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify electrical characteristics and pinout compatibility. Consult manufacturer cross-reference lists for confirmed equivalent parts.