18QHTF21-26.686-PD

Oscillators Overview

The 18QHTF21-26.686-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 26.686 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features a power-down capability, allowing the unit to enter a standby mode to reduce current consumption when not in active use. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Generates a precise 26.686 MHz clock signal using standard XO technology
• Operates with LVCMOS output interface compatible with digital logic circuits
• Supports 1.8V supply voltage for low-power system integration
• Includes power-down functionality to enable standby mode operation

Oscillators Applications

• Digital signal processing systems requiring stable timing references
• Communication equipment utilizing LVCMOS-compatible interfaces
• Embedded control units needing low-voltage clock sources
• Portable electronic devices benefiting from power-down capabilities

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions provided in the official datasheet. Check for any required ordering suffixes that might indicate specific packaging or testing options.

Oscillators Selection Notes

Select this component when a fixed 26.686 MHz frequency is required for LVCMOS-based digital circuits. Consider the 1.8V operating voltage as a primary constraint for power budgeting. Evaluate the need for power-down functionality if energy efficiency during idle periods is critical. Compare the physical size of the 4-SMD package against available board space constraints relative to other oscillator families.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics Ind. Co. Ltd. The series typically offers various frequencies within a standardized 4-SMD form factor. These components are designed for general-purpose timing applications where low voltage and small footprint are prioritized over high-frequency stability or temperature compensation found in TCXO or VCTCXO variants.

Oscillators Replacement Considerations

Direct replacements must match the 26.686 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as rise/fall times and drive strength. Consult manufacturer cross-reference lists for equivalent parts from other suppliers offering identical specifications.