18QHTF21-4.433619-OE

Oscillators Overview

The 18QHTF21-4.433619-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 4.433619 MHz with a frequency stability of ±50ppm. The device utilizes LVCMOS output logic and requires a supply voltage of 1.8V. It features an enable/disable control function for power management. The component is housed in a compact 4-SMD, no lead package, suitable for surface mount applications. This oscillator is designed to provide precise clock signals for digital circuits requiring stable timing references.

Oscillators Feature Summary

• Standard XO configuration with LVCMOS output logic
• Integrated enable and disable control functionality
• Compact 4-SMD no lead surface mount package design

Oscillators Applications

• Digital circuit clock signal generation
• Timing reference for microprocessors
• Communication interface synchronization

Oscillators Procurement Notes

Verify the exact part number including the suffix against official Mercury Electronics documentation to ensure correct frequency and package specifications. Confirm supply voltage requirements match the target system design. Check datasheet for operating temperature range compatibility. Ensure ordering from authorized channels to guarantee authenticity. Review lead time availability as backorders may not be permitted.

Oscillators Selection Notes

Select this component when a 4.433619 MHz clock source with LVCMOS outputs is required. Consider the 1.8V supply constraint and ±50ppm stability requirement. Evaluate the 4-SMD package size against board space limitations. Verify that the enable/disable feature aligns with system power management strategies. Compare against alternative frequencies if the specific NTSC color subcarrier frequency is not strictly necessary.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. The series includes various frequencies such as 6.1679 MHz and 19.200 MHz. These components are designed for reliable performance in consumer and industrial electronics applications requiring precise timing.

Oscillators Replacement Considerations

Direct substitutes must match the 4.433619 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility before replacement. Cross-reference with other manufacturers offering similar standard XO specifications. Ensure thermal and electrical characteristics meet original design requirements.