18QHTF21-61.500-PD

Overview

The 18QHTF21-61.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 61.5 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, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Includes standby capability to reduce power consumption during idle states
• Utilizes a leadless SMD package for automated surface-mount assembly

Applications

• General purpose clock signal generation in electronic circuits
• Timing reference for digital systems requiring 61.5 MHz stability
• Embedded devices utilizing low-voltage logic interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits defined in the official datasheet. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to prevent assembly errors. Cross-reference the part number suffix with manufacturer documentation to confirm availability of the exact variant.

Selection Notes

Select this component when a fixed 61.5 MHz clock source is required with low-power standby functionality. The LVCMOS output is suitable for direct interfacing with standard logic families operating at 1.8V. Consider the physical size of the 4-SMD package relative to available board space. This model is appropriate for applications prioritizing power efficiency alongside standard timing accuracy without the need for differential signaling.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within the same form factor. The series is characterized by its use of quartz technology and standardized LVCMOS outputs. Other variants in this line differ primarily in their operating frequencies while maintaining similar electrical and mechanical specifications.

Replacement Considerations

Direct substitutes must match the 61.5 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and thermal characteristics before swapping manufacturers.