18QHTF21-44.230769-PD

Oscillators Overview

The 18QHTF21-44.230769-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 44.230769 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, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic interface
• Integrated standby and power-down functionality
• Surface-mount 4-SMD no lead package

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing
• Microcontroller clock sources

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application design before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet to guarantee reliability under intended environmental conditions.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS compatibility. The integrated power-down feature makes it suitable for battery-operated devices needing active standby modes. Consider the small form factor of the 4-SMD package for space-constrained designs. Validate that the 44.230769 MHz frequency meets the specific data rate or clocking needs of the target circuit without additional dividers.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series is characterized by low voltage operation and compact surface-mount packaging. Mercury Electronics specializes in frequency control products, including crystals and oscillators, leveraging decades of manufacturing expertise in Taiwan to provide reliable timing solutions for various electronic industries.

Oscillators Replacement Considerations

Direct substitutes must match the 44.230769 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise if critical. Cross-reference with other manufacturers offering similar low-profile oscillators with identical voltage and logic levels.