18QHTF21-122.040-PD

Overview

The 18QHTF21-122.040-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 122.04 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby function for power down capabilities. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications.

Feature Summary

• Supports LVCMOS output logic
• Includes standby mode for power management

Applications

• General electronic timing circuits
• Digital signal processing systems
• Communication equipment

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 122.04 MHz clock source is required with low-voltage operation. Consider the LVCMOS interface compatibility with your target digital logic family. Evaluate the need for standby functionality to optimize power consumption in battery-operated or energy-efficient designs compared to continuous-operation oscillators.

Part Context

This model belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequencies while maintaining consistent electrical characteristics and packaging standards. It represents a standard solution for timing applications requiring reliable quartz-based frequency generation in modern electronic devices.

Replacement Considerations

Direct substitutes include other 122.04 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and voltage levels before substitution. Alternative part numbers within the same series may offer different tolerances but maintain functional equivalence.