18QHTF21-4.639-OE

Oscillators Overview

The 18QHTF21-4.639-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 4.639 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes enable/disable functionality for power 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 for digital interface compatibility
• Integrated enable/disable control for power optimization
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock generation in embedded systems
• Timing reference for low-power digital circuits
• Consumer electronics requiring stable frequency sources

Oscillators Procurement Notes

Verify the specific frequency suffix (4.639) against project requirements, as this series offers multiple frequency options. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout design. Check availability status through authorized distributors, as stock levels may vary.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. The enable/disable feature makes it suitable for battery-powered or power-sensitive designs. Consider the 4-SMD package size for space-constrained layouts. Verify that the 4.639 MHz frequency meets the system's timing specifications compared to other available frequencies in the 18QHTF21 series.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronic. The series typically offers various frequencies with consistent electrical characteristics and packaging. Mercury Electronic specializes in frequency control products, including crystals and oscillators, providing reliable timing solutions for electronic applications.

Oscillators Replacement Considerations

Direct substitutes within the same series include 18QHTF21-4.825-OE and 18QHTF21-6.300-OE, provided the frequency difference is acceptable. Other variants like 18QHTF21-30.000-OE share the same package and electrical profile but differ significantly in frequency. Cross-reference with equivalent LVCMOS oscillators if frequency flexibility is not required.