18QHTF21-4.430-PD

Oscillators Overview

The 18QHTF21-4.430-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 4.43 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and features a standby or power-down mode capability to reduce consumption during inactive periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• LVCMOS output interface
• 1.8V supply voltage operation
• Standby mode support

Oscillators Applications

• Battery-powered portable devices
• General-purpose digital timing circuits
• Embedded system clock generation

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply rail is stable within the operational limits defined in the official datasheet. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions provided in the mechanical drawings to guarantee proper soldering and electrical connection.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V supply is available and LVCMOS compatibility is required. Consider the 4.43 MHz frequency requirement for video or specific timing applications. Evaluate the need for standby functionality to manage power budgets in portable designs. Compare package size constraints against other available oscillator options to ensure mechanical fit within the enclosure.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, a manufacturer specializing in quartz crystals and oscillators. The series typically offers various frequencies with standardized packaging. Mercury Electronics has a long history in the frequency control industry, providing components for consumer electronics and industrial applications requiring precise timing signals.

Oscillators Replacement Considerations

Direct substitutes include other 4.43 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as rise/fall times and duty cycle. Cross-reference with similar series from other manufacturers if Mercury parts are unavailable, ensuring identical form factor and voltage levels.