18QHTF21-100.800-OE

Overview

The 18QHTF21-100.800-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 100.8 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Provides stable 100.8 MHz timing signals via LVCMOS interface
• Operates on a single 1.8V power supply rail
• Includes hardware enable and disable pin for power management

Applications

• Digital signal processing clock sources
• Communication equipment timing references
• Embedded system master clocks

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's power architecture. 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.

Selection Notes

Select this component when a precise 100.8 MHz reference is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage constraint relative to other available logic families. Evaluate the enable/disable functionality if dynamic power saving is necessary for the application. Compare package size constraints against alternative oscillator formats to ensure compatibility with the board layout.

Part Context

This part belongs to the Quickie 8613 series of surface-mount oscillators from Mercury Electronic. The series offers various standard frequencies optimized for consumer and industrial electronics. The 18QHTF21 variant specifically targets low-voltage applications requiring small form factors. It serves as a direct replacement for legacy through-hole or larger surface-mount oscillators in space-constrained designs.

Replacement Considerations

Check for compatible oscillators within the same 18QHTF21 series offering identical 100.8 MHz frequency and 1.8V operation. Verify pinout compatibility for the enable/disable function. Ensure substitute parts maintain LVCMOS output characteristics and similar package dimensions for direct board replacement without redesign.