18QHTF21-4.0001-PD

Oscillators Overview

The 18QHTF21-4.0001-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 4.0001 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Supports low-power standby operation via power-down control
• Delivers stable LVCMOS clock signals for digital circuits
• Utilizes a lead-free surface-mount package for automated assembly

Oscillators Applications

• Battery-powered portable electronic devices
• General-purpose digital signal processing systems
• Communication equipment requiring precise timing references

Oscillators Procurement Notes

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

Oscillators Selection Notes

Select this component when a low-voltage, low-current oscillator is required for space-constrained designs. The 1.8V operation makes it suitable for modern battery-operated systems where power efficiency is critical. Consider the operating temperature range and frequency stability needs to ensure compatibility with the application environment and performance requirements.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, a manufacturer specializing in quartz crystals and oscillators. The series typically offers various frequencies and supply voltages. This specific model provides a 4 MHz output, fitting into the broader portfolio of timing solutions offered by the company for diverse electronic applications.

Oscillators Replacement Considerations

Direct substitutes may include other 4 MHz LVCMOS oscillators in 4-SMD packages with 1.8V supply. Verify pinout compatibility and electrical parameters such as current consumption and phase noise before substitution.