18QHTF21-8.4672-OE

Overview

The 18QHTF21-8.4672-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 8.4672 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and supports enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications. The component is designed to provide stable clock signals for digital circuits requiring precise timing references.

Feature Summary

• LVCMOS output interface for direct logic compatibility
• Integrated enable and disable control pin
• Compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing systems
• Communication equipment clocking
• Microcontroller system timing

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 PCB footprint matches the 4-SMD no-lead package dimensions specified in the official datasheet to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS signaling. The enable/disable feature makes it suitable for battery-powered or power-sensitive designs. Consider the 8.4672 MHz frequency specifically if it matches the input requirements of downstream PLLs or dividers in the signal chain compared to more common standard frequencies.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small form factor. These oscillators are engineered for high reliability in consumer electronics and industrial applications where space constraints and low power consumption are critical design parameters.

Replacement Considerations

Direct replacements must match the 8.4672 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications such as current consumption and phase noise if available in competitor datasheets to ensure functional equivalence in the existing circuit layout.