18QHTF21-84.742-PD

Overview

The 18QHTF21-84.742-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 84.742 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The component is designed for applications requiring precise timing signals within a small form factor.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing
• Available in a compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing systems
• Communication equipment requiring precise clocking
• Embedded systems with space constraints
• Consumer electronics utilizing LVCMOS interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply rail is stable and meets the current consumption specifications outlined in the official datasheet. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues during manufacturing.

Selection Notes

Select this component when a low-profile surface-mount oscillator is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage and the availability of a power-down feature for power-sensitive designs. Evaluate the thermal performance and frequency stability needs relative to the standard XO specifications provided by the manufacturer.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The series offers various frequencies in a standardized small outline package. Mercury Electronics has a long history in Taiwan's quartz crystal industry, providing reliable timing solutions for global electronic markets.

Replacement Considerations

Check for direct substitutes within the same series offering different frequencies but identical package and electrical characteristics. Verify compatibility with existing PCB layouts and supply voltages when considering alternative models from the manufacturer.