18QHTF21-122.76785-OE

Overview

The 18QHTF21-122.76785-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 122.76785 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, no lead package suitable for surface mount applications.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Features integrated enable and disable functionality for power management
• Designed as a standard XO unit for precise timing generation

Applications

• Digital signal processing systems requiring stable clock sources
• Communication equipment utilizing LVCMOS interfaces
• Embedded systems needing low-voltage timing references

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Ensure that the 1.8V supply rail is stable to maintain oscillator performance. Confirm that the 4-SMD no lead package dimensions fit within your PCB footprint constraints. Cross-reference the datasheet for any specific handling or soldering recommendations provided by the manufacturer.

Selection Notes

Select this component when a 122.76785 MHz frequency is required with LVCMOS outputs. Consider the 1.8V operating voltage for compatibility with low-power logic families. Evaluate the enable/disable feature if power conservation during idle states is necessary. Compare package size against available board space to ensure mechanical fit.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics Ind. Co. Ltd, a supplier specializing in quartz crystals and oscillators. The series typically offers various frequencies with standard packaging. Mercury Electronics has a history of manufacturing frequency control products, positioning this component within their portfolio of timing solutions.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies such as 18QHTF21-21.200-OE or 18QHTF21-96.768-OE if frequency adjustment is permissible. Verify pinout and electrical specifications match exactly before substitution.