18QHTF21-72.2676-PD

Overview

The 18QHTF21-72.2676-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 72.2676 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 applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby mode for power reduction
• Surface-mount 4-pin no-lead package design

Applications

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

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the 4-SMD footprint matches your PCB layout constraints. Cross-reference the -PD suffix with official documentation to confirm any specific packaging or handling variations provided by the manufacturer.

Selection Notes

Select this component when a 72.2676 MHz reference is required with low-voltage operation. The LVCMOS output is appropriate for direct interfacing with standard digital logic families. Consider the power-down feature if system-level power efficiency is a priority. Verify that the 4-SMD package size fits within the available board space constraints of the target application.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The manufacturer specializes in quartz crystals and oscillators, offering various frequency options within the same package family. The 18QHTF21 series typically denotes a specific form factor and electrical characteristic set defined by the company's product line standards.

Replacement Considerations

Direct substitutes must match the 72.2676 MHz frequency, LVCMOS output type, 1.8V supply, and 4-SMD package. Check equivalent parts from other manufacturers for identical pinout and electrical parameters. Verify that alternative sources offer comparable frequency stability and phase noise specifications.