18QHTF21-11.999-OE

Overview

The 18QHTF21-11.999-OE is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 11.999 MHz and utilizes LVCMOS output logic. The device is designed for surface-mount applications, featuring a compact 4-SMD, No Lead package configuration. It supports a supply voltage range typically associated with the 18QHTF21 series, ensuring stable clock signal generation for digital circuits.

Feature Summary

• Generates precise clock signals using quartz crystal technology
• Provides LVCMOS output compatibility for standard logic interfaces
• Designed for high-reliability surface-mount assembly

Applications

• Digital signal processing systems
• Communication equipment timing references
• Microcontroller clock sources

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target circuit design. Confirm that the 4-SMD no-lead package dimensions align with the PCB footprint specifications. Ensure the supply voltage matches the system's power rail to guarantee proper oscillator functionality and longevity.

Selection Notes

Select this component when a fixed frequency of 11.999 MHz is required for synchronous digital systems. Consider the LVCMOS output swing for direct interfacing with compatible logic families. Evaluate the mechanical stability of the no-lead package for automated pick-and-place manufacturing processes.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series is characterized by small form factors and standardized output levels. The suffix OE indicates specific ordering or packaging variations defined by the manufacturer for distribution channels.

Replacement Considerations

Direct substitutes must match the 11.999 MHz frequency, LVCMOS output type, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics before swapping with other manufacturers' offerings.