18QHTF21-28.400-PD

Oscillators Overview

The 18QHTF21-28.400-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 28.4 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Provides stable clock signal generation via LVCMOS output interface
• Supports low-power operation with integrated standby functionality
• Utilizes a leadless SMD package for efficient board space utilization

Oscillators Applications

• General purpose digital circuit timing
• Embedded system clock sources
• Consumer electronics timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications 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 processes.

Oscillators Selection Notes

Select this component when a fixed frequency of 28.4 MHz is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint and the need for a power-down feature. Evaluate the physical dimensions of the 4-SMD package against available board space. Compare performance against other Mercury oscillators if different frequencies or voltage levels are needed.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies including 20.46 MHz, 51.2 MHz, and 96.768 MHz. All variants share similar packaging and electrical characteristics, differing primarily in their output frequency and specific application tuning.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts such as 18QHTF21-20.460-PD or 18QHTF21-51.200-PD if frequency flexibility exists. Cross-reference with other manufacturers offering 28.4 MHz LVCMOS oscillators in 4-SMD packages, ensuring voltage and pinout compatibility.