18QHTF21-75.385-PD

Overview

The 18QHTF21-75.385-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.385 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby power-down feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for applications requiring precise timing signals within space-constrained electronic systems.

Feature Summary

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

Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics internal clocks

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail is stable and within the operational limits defined in the official datasheet. Confirm that the PCB footprint matches the 2.0x1.6 mm package dimensions to avoid assembly issues. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure joint integrity.

Selection Notes

Select this model when a low-voltage 1.8V operation is required alongside a specific 75.385 MHz frequency. Consider the small form factor if board space is limited. Evaluate the need for power-down functionality if battery life or thermal management is a priority. Compare against other frequencies in the 18QHTF21 series if the exact frequency is not critical, but note that frequency changes require a new part number.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic Ind., Co., Ltd., which specializes in quartz crystal frequency control products. The series offers various frequencies such as 51.2 MHz and 6.760 MHz in similar packages. Mercury Electronics has a long history in Taiwan manufacturing quartz crystals, positioning this component within their standard XO lineup for general electronic applications.

Replacement Considerations

Direct replacements must match the 75.385 MHz frequency, 1.8V supply, and LVCMOS output. Other variants in the 18QHTF21 series differ only in frequency (e.g., 18QHTF21-51.200-PD) and are not electrically compatible without circuit redesign. Verify pinout and mechanical dimensions for any cross-brand substitutes.