18QHTF21-4.300-PD

Oscillators Overview

The 18QHTF21-4.300-PD is a 4.3 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a Standby (Power Down) function for power management. It is housed in a compact 4-SMD, No Lead package. This component is designed for applications requiring precise frequency generation with low power consumption.

Oscillators Feature Summary

• LVCMOS output logic for standard digital interfacing
• Integrated standby mode for power reduction
• Compact surface-mount package design

Oscillators Applications

• Portable electronic devices requiring low power operation
• Communication equipment needing stable clock signals
• Embedded systems utilizing LVCMOS interfaces

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target circuit's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific handling instructions related to the no-lead package type during assembly processes.

Oscillators Selection Notes

Select this model when a 4.3 MHz clock source with LVCMOS compatibility is required. Consider the 1.8V operating voltage for compatibility with low-voltage digital logic families. Evaluate the need for a standby feature to manage power efficiency in battery-operated applications. Compare package dimensions against available board space to ensure mechanical fit within the final product enclosure.

Oscillators Part Context

This part belongs to the Mercury Electronic XO series, which includes various frequencies and voltage options. Similar models like the 18QHTF21-64.300-PD share the same package and logic family but differ in frequency. The series is characterized by small form factors suitable for modern consumer electronics. Mercury Electronics has established itself as a pioneer in quartz products since 1973.

Oscillators Replacement Considerations

Direct substitutes may include other 4.3 MHz LVCMOS oscillators from Mercury or competitors with identical 1.8V ratings and 4-SMD packages. Verify pinout compatibility and electrical specifications such as rise/fall times and duty cycle. Ensure thermal characteristics match the original component for reliable operation under similar environmental conditions.