18QHTF21-73.636363-PD

Overview

The 18QHTF21-73.636363-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 73.636363 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down control feature. It is housed in a compact 4-SMD, no lead package, designed for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby and power-down functionality
• Provides LVCMOS output signal compatibility

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits defined in the official datasheet. Ensure the PCB layout supports the 4-SMD no-lead package dimensions to guarantee proper soldering and thermal performance during assembly.

Selection Notes

Select this component when a precise 73.636363 MHz reference is required for LVCMOS-compatible digital circuits. The choice is driven by the need for low-power operation at 1.8V and the inclusion of a power-down pin for energy management. Consider the physical size constraints of the 4-SMD package relative to other available oscillator footprints in the design.

Part Context

This model belongs to the Mercury Electronics XO series, which specializes in precision frequency control products. The manufacturer has extensive experience in quartz crystal manufacturing, providing reliable timing solutions. This specific part number represents a standard configuration variant within their portfolio of surface-mount oscillators.

Replacement Considerations

Direct substitutes must match the 73.636363 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics before swapping. No alternative part numbers are publicly confirmed as direct replacements for this specific Mercury Electronics designation.