18QHTF21-39.845888-OE

Oscillators Overview

The 18QHTF21-39.845888-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 39.845888 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features enable/disable control functionality. 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 for digital interface compatibility
• Integrated enable/disable control capability
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system 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 power rails. Ensure the 4-SMD no-lead footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS signaling standards. The enable/disable feature allows for power management optimization in battery-operated devices. Consider the small form factor suitable for space-constrained designs where standard leaded packages are not feasible.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series typically includes various frequencies optimized for consumer electronics and industrial applications. Mercury Electronics has established itself as a pioneer in the Taiwan crystal industry since 1973.

Oscillators Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in 4-SMD no-lead packages with similar frequency ratings. Verify pinout compatibility and electrical characteristics such as current consumption and startup time when evaluating alternative sources.