18QHTF21-6.48955-PD

Overview

The 18QHTF21-6.48955-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 6.48955 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode functionality to reduce power consumption
• Designed with a leadless SMD package for automated surface-mount processing

Applications

• General-purpose timing clock generation
• Digital signal processing circuits
• Communication equipment baseband modules

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 PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to prevent assembly errors.

Selection Notes

Select this component when a precise 6.48955 MHz reference is required for LVCMOS-compatible digital systems. Consider the 1.8V operating voltage constraint and the availability of standby control signals. Evaluate the thermal and mechanical constraints of the 4-SMD no-lead form factor within the final enclosure design.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency references. The model number indicates the specific frequency variant within the 18QHTF21 family. It shares common packaging and electrical characteristics with other variants in the same series, differing primarily in output frequency and potentially specific tolerance grades.

Replacement Considerations

Direct substitutes must match the 6.48955 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD no-lead package. Verify pinout compatibility and thermal performance metrics before cross-referencing with alternative manufacturers' offerings.